Question

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

A circle has a diameter of 28 centimeters.


Estimate the area of the circle. Use

3.14

or

22
___
7

for

π

.

Answer 1

616 square centimeters

Explanation:

Area of a circle is equal to pi × r^2. In this case, they have asked that you substitute 3.14 or 22/7 for pi, so I will be using 22/7, instead.

Diameter is equal to 2r; to find the radius, simply divide 28 by two. This gives us a radius of 14.

Multiply 14 squared by 22/7:

(22/7)(14^2)

This gives us (22/7)(196); (4312/7); 616.

Therefore, the area of the circle is approximately 616 square centimeters.