Question

A circle has an area of 45.4 square meters. What is the length of the radius and diameter?

Answer 1

Area = pi x radius^2

45.4 = 3.14 x radius^2

radius^2 = 45.4 /3.14 = 14.46

radius = sqRoot (14.46) = 3.8 meters

diameter = 2 * radius = 3.8 x 2 = 7.6 meters

Explanation: