What is the circumference of a circle with a radius of 13 centimeters?

1 Answer
Jun 11, 2017

Answer:

# c = 26pi# or # c approx 81.68#

Explanation:

The formula for finding the circumference of a circle is:

# c = pid#

Thus, the only variable we really need to convert is the radius. We know that the formula for converting radius to diameter is:

# 2r = d#

Finally, all we need to do is plug in the values:

#c = pid#
= #c = pi * 26#
= #c approx 81.68#

All the best!