Question

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

Answer 1

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) 

Answer 2

Answer:

5 centimeters

Step-by-step explanation: