Area of a circle can simply be evaluated using following formula.

Area = pi * r^{2}where r is radius of circle

## Python3

`# Python program to find Area of a circle ` ` ` `def` `findArea(r): ` ` ` `PI ` `=` `3.142` ` ` `return` `PI ` `*` `(r` `*` `r); ` ` ` `# Driver method ` `print` `(` `"Area is %.6f"` `%` `findArea(` `5` `)); ` ` ` `# This code is contributed by Chinmoy Lenka ` |

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Please refer complete article on Program to find area of a circle for more details!

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