Question

Find the radius of circle whose circumference and area are equal

Answer 1

Given--2pi*r=pi*r(squared(
pi and pi gets cancelled
Therefore
2r=r(squared)
one r from LHS and RHS gets cancelled
Therefore r=2

Answer 2

Answer:

area = circumference

πr^2 = 2πr

r^2 = 2r

r =2