Problema Solution
A circular mirror has an area of 153.94 square centimeters. Find the circumference.
Answer provided by our tutors
Area = pi * r^2
153.94 = pi * r^2
r^2 = 153.94/3.14 = 49
r = 7 cm
Circumference = 2 pi * r
=2* 3.14 * 7
= 43.96 cm