Calculate Circle Area

This worksheet will help you to know about Circle Calculation. It is used to find out the Circle's Total Area, Circumference and Diameter of the given radius value. The Circle is a plane curve everywhere equidistant from a given fixed point, the center. A line connecting any two points on a circle is called a chord, and a chord passing through the center is called a diameter. Radius of the circle is represented by R. R = D/2.
Circle Area & Circumference formula
Circle Area = π r2

Circle Circumference = 2 π r

Circle Diameter = 2 r

For Example
Radius of the circle is 5
Circle Area = π r2
= 3.14 x 5^2
= 78.57
Circle Circumference = 2 π r
= 2 x 3.14 x 5
= 31.4286
Circle Diameter = 2 r
= 2 x 5
= 10

When you try this calculation on your own, use this circle calculator to verify your answers.

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