Question

If perimeter and area of circle are numerically equal, find the diameter of circle

Answer 1

hear the area of circle= perimeter of circle

$\pi \: r {}^{2} = 2\pi \: r$
let the value of r is 2 than
$\pi \: 2 {}^{2} = 2\pi(2)$
hence the value or r is 2 specify the given condition
r=2
diameter= r×2= (2)×2=4