What is the circumference of a circle whose radius is 7 centimeters?

1 Answer
Dec 19, 2015

circumference#=43.98# #cm#

Explanation:

The circumference of a circle can be calculated with the formula:

#C=2pir#

where:
#C=#circumference
#r=#radius

To find the circumference, substitute your known values into the equation:

#C=2pir#
#C=2pi(7)#
#C=14pi#
#C~~43.98#

#:.#, the circumference is approximately #43.98# #cm#.