The formula for the circumference of a circle is:
C = πd
Where C is the circumference, d is the diameter, and π (pi) is a mathematical constant approximately equal to 3.14.
So to find the circumference of a music CD with a diameter of 12 centimeters, we can substitute d = 12 into the formula:
C = πd
C = 3.14 × 12
C = 37.68
Rounding to the nearest tenth, the circumference of the CD is 37.7 centimeters.
The diameter of a music CD is 12 centimeters. Find the circumference of a CD to the nearest tenth.
1 answer