Question

Find the circumference of a CD with a diameter of 4.75 inches.

Answer 1

Answer: The circumference is 15 inches (approximately)

Step-by-step explanation: If the circular CD has a diameter of 4.75 inches, then it’s radius would be given as diameter divided by two. That is,

Radius = 4.75 /2

Radius = 2.375

The circumference of a circle is given as

Circumference = 2Pi x r

Circumference = 2 x 3.14 x 2.375

Circumference = 14.915

Therefore the circumference of the CD to the nearest whole number equals 15 inches.

Answer 2

C = 4.75 pi inches or approximately 14.915 inches

Explanation:

To find the circumference, we use the formula

C= pi *d

C = pi * 4.75

We can approximate pi by 3.14

C= 3.14* 4.75

C is approximately 14.915