Using the formula c = 2πr, find the circumference of a circle with diameter of 28 inches.

Solution:

The formula we have to use to find circumference of circle is 

c = 2πr

It is given that

Diameter of the circle = 28 inches

Radius of the circle = 28/2

= 14 inches

Substituting it in the formula, we get

c = 2 × π × 14

c = 87.96 inches

Therefore, the circumference of the circle is 87.96 inches.

Using the formula c = 2πr, find the circumference of a circle with diameter of 28 inches.

Summary:

Using the formula c = 2πr, the circumference of a circle with diameter of 28 inches is 87.96 inches.