Question

A circle has a diameter of 100 cm. which of these is closest to its area? show or explain your reasoning.

314 cm
7,854 cm
15,708 cm
31,400 cm

Answer 1

7,854 cm

Explanation:

The area of a circle is given by πr², and the radius is the diameter/2:

100/2=50

π•50²=7,853.98≈7,854