Circle calculator. How can I use Circle Calculator? All of these values are linked with the mathematical constant π, or pi, which is the proportion of a circle’s circumference to its diameter… Then tap or click the Calculate button. You can also see at the bottom of the calculator, the step-by … For example, if the angle is 45° and the radius 10 inches, the area is (45 / 360) x 3.14159 x 10 2 = 0.125 x 3.14159 x 100 = 39.27 square inches. You need to know the diameter of the circle in either feet (ft), inches (in), yards (yd), centimetres (cm), millimetres (mm) or metres (m). This tool will calculate the diameter of a circle from the area, and will convert different measurement units for area and diameter. Just enter the value of the circumference. Radius of circle r = 20 feet. A circle is set of all points in a plane that are at a given distance from the centre. Formula and explanation, description, conversion. π = 3.142 This is why and how our Area Of A Circle Calculator can help you and instantly solve your questions. It supports different units such as meters, feet, and inches. Questionnaire. Given the radius or diameter and pi you can calculate the circumference. Our calculator gives you the option of calculating the exact cost of materials. Enter the radius, diameter, circumference or area of a Circle to find the other three. Our circle area calculator is used to find the area of a circle given its radius, diameter or circumference. The diameter is a line that connects two points of a circle and passes through the middle of it. The age-old conundrum, why do we need two systems of measurements? As the radius is given as 3.5 cm. The π (pi) variable is basically a constant which cannot be expressed as a fraction but applies to all calculations – including the area of a circle calculator – whereas the √ (square foot) is basically the total surface within a circle. Just enter the measurement you know. Answer = (π x (Diameter/2)^2) square area Then tap or click the Calculate button. The diameter will always pass through the center of the circle. Circumference to Diameter Calculator. The area of a circle calculator helps you compute the surface of a circle given a diameter or radius. 3. Solve area, diameter, and circumference, circle equations. Just type into the box and your conversion will happen automatically This is the diameter of a circle that corresponds to the specified area. Circle diameter to radius calculator; Convert an area to different units; Length and distance converter; Sphere diameter to volume calculator; Sphere diameter to surface area calculator; User Guide. Can calculate area, arc length,chord length, height and perimeter of circular segment by radius and angle. Use this easy and mobile-friendly calculator to compute the area of a circle given its diameter. Area = pi * (diameter/2)*(diameter/2) Area = (1/4)* pi * d 2. person_outlineAntonschedule 2011-05-14 19:39:53. Units: Note that units of length are shown for convenience. Essentially, the diameter is twice the radius – or any line that goes from one side of the circle to the other while crossing its center. The following area of a circle calculator will help you find the area of any circle when the radius is given. Example: The area of a circle with a radius(r) of 3 inches is: Circle Area … radius r diameter R; area S . Our Square Footage Calculator helps you calculate the area required for making circular landscaping designs, carpeting, wall decals, centre moulding on a ceiling and floor tiling. Area of a circle in square metres = (Diam ÷ 2)² * 3.14159 Example: Circle with a diameter of 30 metres 30 ÷ 2 = 15 * 15 * 3.14159 = 706.858 square metres You can also use it to find the area of a circle: A = π * R² = π * 14² = 615.752 cm². Calculates the area and circumference of a circle given the radius or diameter. If JavaScript is not working on your browser, or in case you are simply curious, here is the procedure for calculating the diameter of a circle from its area. A circle is a simple closed shape in Euclidean geometry. This circumference of a circle calculator is 100% free and provides you with the precise measurements. circumference L . Learn more about pi, or explore hundreds of other calculators addressing finance, math, … Formulas for calculating the area of a circle. Our area of circl calculator lets you easily find the area, circumference, radius or specific diameter of any circle. Price per unit (drop down ft2, in2, yd2, cm2, mm2, m2). To calculate the area, you just need to enter a positive numeric value in one of the 3 fields of the calculator. Easily Find The Area Of A Circle (And Related Use Cases). Yes, our tool is that awesome. Find the area with this circle area formula: Multiply Pi (3.1416) with the square of the radius (r) 2. Did you like this tool? It can be also used to calculate other parameters of a circle such as diameter, radius and area. Calculate the area of a circle from a diameter measured in metres with results in square metres, hectares and acres. You can calculate the area of the circle border in square feet, in square inches, square yards, square centimetres, square millimetres and square meters. Divide the area (in square units) by Pi (approximately 3.14159). Our tool works both ways - no matter if you're looking for an area to radius calculator or a radius to the area one, you've found the right place To calculate the area, you just need to enter a positive numeric value in one of the 3 fields of the calculator. To find out the area of a circle border, we need to know its inner diameter and the width of the circular border. Let's assume it's equal to 14 cm. The following formulas are used for circle calculations. A circle is set of all points in a plane that are at a given distance from the centre. Area = pi * (diameter/2)*(diameter/2) Area = (1/4)* pi * d 2. How to find the circumference of a circle. To find the area using the diameter, or the distance from one side of the circle to the other, first divide the diameter in half to find the radius. Sphere volume to diameter calculator; Sphere surface area to diameter calculator; User Guide. Remember, the input can only be in feet (ft), inches (in), yards (yd), centimetres (cm), millimetres (mm) and metres (m) but never a combination of two different units! You can use numerous different inputs and choose to submit the radius, the diameter or the circumference of the circle. This calculator will calculate the area of a circle given its diameter, using the famous formula area = pi times (d/2) squared. Then tap or click the Calculate button. For example, if the diameter is 20 inches, you would divide that in half and get 10 inches. Things You Need To Take Care About Measuring An Area Of A Circle. To the rescue is Circle Calculator. The radius is the length from the … Here you can calculate the area, diameter, circumference of a circle and also area of a sector. Essentially, this variable can be defined as the distance around the circle or the entire length of the circuit along the circle. The radius is half of the diameter. You can enter the radius and then compute diameter and circumference in mils, inches, feet, yards, miles, millimeters, centimeters, meters and kilometers.. Area has different units, but you can use: square mils, square inches, square feet, square yards, square miles, acres, hectares, square millimeters, square centimeters, square … Given any one variable A, C, r or d of a circle you can calculate the other three unknowns. The radius can be expressed as either degrees or radians, with our area of a sector calculator accepting only degrees for now (let us know if it would help you if it supported radians as well). Circumference to Diameter Calculator. Substitute this value to the formula for circumference: C = 2 * π * R = 2 * π * 14 = 87.9646 cm. This calculates the area as square units of the length used in the radius. The radius can be any measurement of length. All you have to do is enter the price per unit area and voila, you have the total cost of materials in a single click! Click save settings to reload page with unique web page address for bookmarking and sharing the current tool settings, or click flip tool to reverse the tool function with current settings, Switch tool with the current settings for diameter, and calculate circle circumference, circle radius, sphere volume or sphere surface area instead. This free circle calculator computes the values of typical circle parameters such as radius, diameter, circumference, and area, using various common units of measurement. What is the area of a circle with a DIAMETER of 120 cm (radius of 60 cm)? Our circle area calculator is used to find the area of a circle given its radius, diameter or circumference. Abbreviations of unit area: ft2, in2, yd2, cm2, mm2, m2. Just enter the value of the radius and hit calculate button. A circle is the set of all points in a plane at a fixed distance, called the radius, from a given point, the centre. Learn more about pi, or explore hundreds of other calculators addressing finance, math, fitness, health, and more. Circle calculator. This tool will calculate the diameter of a circle from the area, and will convert different measurement units for area and diameter. Area of a circle formula The formula for the area of a circle is π x radius2, but the diameter of the circle is d = 2 x r 2, so another way to write it is π x (diameter / 2)2. Formula of area of circle in the form of diameter is. It is an online Geometry tool requires radius length of a circle. Essentially, the formula gives you accurate details on how much material you need or how big the surface (you will drill into) needs to be. Compute the area using these units: square mils, square inches, square feet, square yards, square miles, acres, hectares, square millimeters, square centimeters, square meters, and square kilometers. Given the radius or diameter and pi you can calculate the circumference. Example: 303,000/3.14159 = 96447.98 All you need is another variable to get the other three and solve the problem immediately. You can enter the radius and then compute diameter and circumference in mils, inches, feet, yards, miles, millimeters, centimeters, meters and kilometers.. Area has different units, but you can use: square mils, square inches, square feet, square yards, square miles, acres, hectares, square millimeters, square centimeters, square meters, and square kilometers. Formula. Area = 3.1416 x r 2. You can also select units of measure for both input data and results. Using this calculator, we will understand methods of how to find the perimeter and area of a circle. To find out the area of a circle, we need to know its diameter which is the length of its widest part. D=2r. For an example, we have an area of 303,000 square meters. Formula of area of circle in the form of diameter is. The area of a circle will be shown in the selected units. The radius can be any measurement of length. The area of a circle is A = pi multiplied with r² and the circumference is U = 2 multiplied with pi multiplied with r , in which pi is the circle constant (approximately 3,14). An area is the size of a two-dimensional surface. FAQ. Circular segment. Lesson Plan Area and circumference of circle calculator uses radius length of a circle, and calculates the perimeter and area of the circle. The diameter of a circle is the length of a straight line drawn between two points on a circle where the line also passes through the centre of a circle, or any two points on the circle as long as they are exactly 180 degrees apart. Find the area with this circle area formula: Multiply Pi (3.1416) with the square of the radius (r) 2. You can put this calculator widget on your website, web page or blog. In more exact words, it is the segment of a straight line that passes through the center of the circle and ends where it touches two points on the circle. What we need to calculate is the radius and diameter. All you need to do is fully understand the variables of this formula including the: With any of these variables (A, C, r or d) of a circle, you can precisely measure the other three unknowns. Area of a Circle Calculator Area of a circle is simply, number of square units fit into a circle. Hence the area of a semi-circle is just the half of the area of a circle. circumference L . The diameter will always pass through the center of the circle. Circle Equation Calculator: This calculates the equation of a circle from the following given items: * A center (h,k) and a radius r * A diameter A(a 1 ,a 2 ) and B(b 1 ,b 2 ) Are you looking to calculate circumference of a circle? You can use this formula in many real world examples such as when building a house, drilling, filling holes with concrete etc. Perhaps, their main variable is the radius – which is measured from the center of the circle to any of its sides. Formula. πr 2 = π*(D/2) 2 = πD 2 /4 A circle is a simple closed shape in Euclidean geometry. Enter the circle radius, diameter, circumference, or area and it will solve for the other three! Circle area calculator and circumference calculator provide you with a simple way of determining the square footage area for various shapes. Questionnaire. FAQ. You can calculate the area of a circle if the diameter is given as such. To calculate the area, you just need to enter a positive numeric value in one of the 3 fields of the calculator. The circumference of a circle, however, is not that commonly understood by many. Male or Female ? This tool will calculate the area of a circle from the diameter, and will convert different measurement units for diameter and area. Get the result. Circumference calculator is a free tool used to calculate the circumference of a circle when the radius is given. Area of a circle [1-10] /34: Disp ... To improve this 'Area of a circle Calculator', please fill in questionnaire. Area and circumference of circle calculator uses radius length of a circle, and calculates the perimeter and area of the circle. A diameter of a circle is defined as a straight line passing from one side to another side through the center point. Just enter the area value in the input field and click calculate in this Diameter of a circle from area calculator to find the result. For the sake of understanding, we will solve the previous example using the formula of a diameter. The area of a circle will be shown in the selected units. Just input the circumference value in the input field and the diameter of a circle from circumference calculator will automatically update you with the circle diameter. Area of a circle [1-10] /34: Disp ... To improve this 'Area of a circle Calculator', please fill in questionnaire. The formula used to calculate the circle diameter is: Enter the area contained within a circle. Exterior cladding, or siding as it is often called, can change the entire look of a house. Whether you are in class solving a math test or need an accurate calculation about the area of a circle for a project that you are building, the formula for area of a circle is simple – but not that simple when you are left with a pen and paper. For the sake of understanding, we will solve the previous example using the formula of a diameter. Formula to calculate area, circumference, diameter & radius of a circle Mathematical, algebra converter, tool online. Area of a Circle = π x (Diameter/2)^2 Circular segment - is an area of a circle which is "cut off" from the rest of the circle by a secant (chord). Get the result. This circumference to diameter calculator is used to find the diameter of a circle given its circumference. The diameter should be measured in feet (ft) for square footage calculations and if needed, converted to inches (in), yards (yd), centimetres (cm), millimetres (mm) and metres (m). Technology has advanced and with that, there have been many calculators which help users precisely measure things even from the comfort of their laptop or mobile phone. Diameter = 2* radius. Check out the interactive simulation on the formation of a circle. π = 3.142 The diameter is the distance from one side of the circle to the other at its widest points. A circle of radius = 2 or diameter = 4 or circumference = 12.57 units has an area of: Use the this circle area calculator below to find the area of a circle given its diameter, or other parameters. You can also select units of … Just type into the box and your conversion will happen automatically The diameter equals twice the radius of the circle. The area of a circle is the space contained within its circumference (outer perimeter). Any diameter divides the circle (or rather the disk) into two equal halves. To understand how to calculate square footage we must first begin with the definition of area. Are you looking to calculate circumference of a circle? This calculates the area as square units of the length used in the radius. A circle is the set of all points in a plane at a fixed distance, called the radius, from a given point, the centre. Male Female Age Under 20 years old 20 years old level The following formulas are used for circle calculations. Area of a Circle Calculator – Circle Area Calculator (squarefootagearea.com). Just enter the measurement you know. Circle Area Calculator. Circle diameter = 40 feet. The area of some circle is known and equals 15.7 m². How to Find the Area of a Semicircle To find the area of a semi-circle, you need to know the formula for the area of a circle. You can also see at the bottom of the calculator, the step-by-step solution. Use the this circle area calculator below to find the area of a circle given its diameter, or other parameters. Recall that the formula to get the area of circle is pi × r 2 with pi = 3.141592653589793 To convert among square feet, square inches, square yards, square centimetres, square millimetres and square meters you can utilize the following conversion table. Circle Calculator. ... Area of a Circle = π x (Diameter/2)^2 π = 3.142 Answer = (π x (Diameter/2)^2) square area Abbreviations of unit area: ft 2, in 2, yd 2, cm 2, mm 2, m 2. Customer Voice. To run the calculator, hit the 'Calculate Circle Dimensions' button when you have entered the known diameter. To understand how to calculate square footage we must first begin with the definition of area. Area of a Circle = π x (Diameter/2)^2 We use them. You can also select units of measure for both input data and results. Using Radius to Find Area Identify the radius of a circle. Area of a Circle Calculator. This geometry calculator will take one known circle measurement (area, circumference, diameter, or radius) and calculate the other three. A circle of radius = 8 or diameter = 16 or circumference = 50.27 units has an area of: Use the this circle area calculator below to find the area of a circle given its diameter, or other parameters. Therefore the length of diameter is always twice the radius. Used since ancient geometrics, all of these variables let you precisely calculate anything related to a circle. Use the this circle area calculator below to find the area of a circle given its diameter, or other parameters. Customer Voice. Just enter the value of the circumference. radius r diameter R; area S . Diameter = 2* radius. Then tap or click the Calculate button. 4. Area of a circle is simply, number of square units fit into a circle. The radius is the distance … Convert radius to circumference, area, diameter. Our circle area calculator, requires diameter OR radius of a circle to calculate area of a given circle. As the radius is given as 3.5 cm. Plus, unlike other online circle calculators, this calculator will show its work and give a detailed, step-by-step explanation of the formulas and sequence used to arrive at each result. We can also calculate the area directly using diameter. It supports different units such as meters, feet, and inches. An online circumference calculator that allows you to find circumference, radius, diameter, area, sphere surface area, and sphere volume of a circle. Diameter (drop down ft, in, yd, cm, mm, m) Measuring the diameter is easier in many practical situations, so another convenient way to write the formula is (angle / 360) x π x (diameter / 2) 2. Many home improvement projects require you to measure the space you will be working in. The following area of a circle calculator will help you find the area of any circle when the radius is given. 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