Question

Find the circumference of a circle:

Whose radius is 3 ½ in. (22/7)

Whose diameter is 3.6 (3.14)

Answer 1

1. 22 in

2. 11.304 units

Explanation:

Formulas for the circumference are

C = 2πr

C = πd

___

1. Put the given numbers in the appropriate formula:

C = 2·(22/7)·(7/2 in) = 22 in

__

2. Put the given numbers in the appropriate formula:

C = 3.14·3.6 = 11.304 . . . units