Question

What is the area of the circle shown below?

Answer 1

Answer:

A. 1520.5 cm^2

Step-by-step 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.