Question

A circle has an area of 80 square centimeters. Which answer is closest to the measure of its radius?

Answer 1

5 centimeters

Explanation:

Answer 2

There are no close answers, because you decided
not to list the choices at all.

The area of a circle is (pi) x (radius²) .

So 80 = (pi) (radius²)

Divide each side by pi : Radius² = (80/pi)

Take the square root
of each side: Radius = √ (80/pi)

= 5.0463 cm (rounded)