Question

A circle has a radius of 50 cm. Which of these is the closest to its area?

157 cm squared
314 cm squared
7,854 cm squared
15,708 cm squared

Answer 1

7,854 cm squared

Explanation:

The formula for the area of a circle is ...

A = πr^2

Filling in the given radius gives you ...

A = π(50 cm)^2 = 2500π cm^2 ≈ 7854 cm^2