Question

What is the area of a circle with a circumference of `64pi`?

Answer 1

Area of circle is `1024pi`

Explanation:

Circumference of a circle of radius `r` is given by `2pir` and area is `pir^2`.

As `2pir=64pi` i.e. `r=(64pi)/(2pi)=64/2=32`,

Hence, area is `pi(32)^2=1024pi`.