# Using the formula C = 2πr, find the circumference of a circle with diameter of 28 inches. Round your answer to the nearest inch.

88 in, 44 in, 28 in, 56 in

**Solution:**

It is given that, the formula C = 2πr

The formula given to us relates circumference with radius but we are given diameter instead.

We know that diameter is twice the length of radius,

Given, diameter = 28,

Then, radius = 28/2 = 14.

Now we have to find the circumference:

C = 2(π)(14)

C = 87.96

This answer is close to 88.

Therefore, the circumference of a circle is 88 in.

## Using the formula C = 2πr, find the circumference of a circle with diameter of 28 inches. Round your answer to the nearest inch.

**Summary:**

Using the formula C = 2πr, the circumference of a circle with diameter of 28 inches is 88 in.

Math worksheets and

visual curriculum

visual curriculum