Question

The area of a circle is 4/pi cm. What is the circumference in centimeters express your answers in terms of pi

Answer 1

4 cm.

Explanation:

Area = pi r^2, so:

pi r^2 = 4 / pi

(pi)^2 r^2 = 4

r^2 = 4/ (pi^2)

r = 2/pi

Therefore, the circumference

= 2 pi r

= 2* pi * 2/pi

= 4