Question

What is the area of the circle shown below?

Answer 1

A. 1520.5 cm^2

Explanation:

The area of a circle can be found using the following equation:

`a=\pi r^2`

In this problem, the radius (from the center of the circle to the circumference of the circle) is 22 centimeters. Therefore, we can substitute 22 cm in for r.

r=22 cm

`a=\pi *22 cm^2`

First, evaluate the exponent.

22 cm ^2= 22 cm * 22 cm= 484 cm^2

`a=\pi *484cm^2`

Multiply pi and 484

`a=1520.53084 cm^2`

Round to the nearest tenth. The 3 in the hundredth place tell us to leave the 5 in the tenth place.

`a= 1520.5 cm^2`

The area of the circle is 1520.5 square centimeters and A is correct.