Question

A CD is shaped like a circle with a diameter of 12 cm. To the nearest centimeter, what is the circumference of the CD?

Answer 1

38 cm

Explanation:

The circumference is found by pi*diameter.

pi*12=37.6991118431, rounded up is 38

Answer 2

38 cm

Explanation:

Circumference is given by

C = pi *d

C = pi *12

C = 3.14 * 12

C=37.68

Rounding to the nearest cm

C = 38