Question

The area of a circle is 641 m2. What is the diameter?

Answer 1

d = 28.57

Explanation:

area = πr^2

so

641 = πr^2

641/π = r^2

204.036637 = r^2

14.2841394 = r

diameter = 2r

14.2841394(2) = d

28.5682788 = d

rounded to nearest hundredth is

d = 28.57

Answer 2

The diameter would be d=28.57