How do we find an area of a circle ?!

1 Answer
Karthik N
May 2, 2018

We use the formula #pir^2#.

Explanation:

Where,

#pi# is a constant number. In fact, it is the ratio of the circumference to the diameter of any circle. It is approximately #3.1416#.

#r^2# is the square of the radius of the circle.

Example : The area of a circle with radius #10# cm would be:

#= pixx10^2#
#=3.1416xx100#
#=314.16cm^2#

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