Question

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

Answer 1

69.08 INCHES

Explanation:

Substitute the values of r (11inches) and pi (3.14) in the formula C = 2πr to find C:

C = 2 × 3.14 × 11 inches

C = 69.08 inches.

The circumference of the wheel is about 69.08 inches.

this is correct answer from assignment

Answer 2

Find the radius first by dividing the diameter by 2.

Radius = 28/2 = 14

Circumference:

2πr
2(3.14)(14)c
87.92 inches

Hope this helps :)