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30 lip 2024 · The area of a circle calculator helps you compute the surface of a circle given a diameter or radius. 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 .
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6 lut 2024 · Calculate the area, circumference, radius and diameter of circles. Find A, C, r and d of a circle. Given any 1 known variable of a circle, calculate the other 3 unknowns.
24 lip 2024 · The radius of a circle calculator returns the length of a circle's radius based on the input data: the circumference, area, or diameter.
22 lip 2024 · This circle calculator finds c (circumference), d (diameter), a (area), and r (radius) of a circle.
This calculator computes the values of typical circle parameters such as radius, diameter, circumference, and area, using various common units of measurement.
Find Area Using Radius. The radius of a circle is the length of a straight line from the center of the circle to the outer edge. The most commonly used formula to find the area given the radius of a circle is: A = π × r². Thus, the area of a circle A is equal to pi times the radius r squared.
How to Calculate the Area. The area of a circle is: π(Pi) times the Radius squared:A = πr2. or, when you know the Diameter:A = (π/4) × D2. or, when you know the Circumference:A = C2/ 4π. Example: What is the area of a circle with radius of 3 m ? Radius = r = 3. Area= πr2. = π× 32. = 3.14159... × (3 × 3) = 28.27 m2(to 2 decimal places)
