Question

Hey circle has a diameter of 30 cm what is the circumference?

Use 3.14 for pie and do not round your answer be sure to include the correct unit in your answer 

Answer 1

94.2cm

Explanation:

Diameter 30cm

π = 3.14

Circumference of a circle is given by the formula:

C = 2πr

r = radius

Radius is equal to half of the diameter

30/2 = 15cm

Sub into equation:

C = 2(3.14)(15)

C = 94.2cm