Question

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

Answer 1

Answer: 88 inches

Explanation:

We know that the formula to find the circumference of circle is given by :-

`C=2\pi r`, where r is the radius of the circle.

Given : Diameter of circle = 28 inches

Also, diameter is twice of radius.

i.e. 2r=28

Therefore, the circumference of circle will be :-

`C=2\pi r=(2r)\pi=28*(3.14)=87.92text{ inches}\approx88\text{ inches}`

Hence, the circumference of circle is 88 inches.