algebra word problem

Question

What is the radius of a circle whose area is 616 square meters?

Answer 1

For a circle:

 

Area = pi*radius²

 

616 m² = (3.14)*radius²

 

(616 m²)/3.14 = radius²

 

196 m² = radius²

 

√(196 m²) = radius

 

14 m = radius