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I know that for a circle = . From this find out of the circle.

`pi = `
 
 
SolutionCircle FormulaArea Formula
Area of Circle
Area `(A) = pi r^2`
Circumference `(C) = 2 pi r = pi d`
Diameter `(d) = 2 r`

Example :
I know that for a circle Radius = 10 . From this find out Area of the circle.

`"Here radius " (r)=10 "(Given)"`

``

`"Diameter " (d)= 2 * r`

` = 2 * 10`

` = 20`


`"Perimeter" = 2 pi r`

` = 2 * 22/7 * 10`

` = 440/7`


`Area = pi r^2`

` = 22/7 * (10)^2`

` = 2200/7`


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