The circumference (C)
of a circle is 18
centimeters. Which formula can you use to find the radius (r)
if you know that C=2πr
?
CLEAR CHECK
r=C/2π
r=2C/π
r=πC/2
r=2πC
The correct formula to calculate the radius (r) if the circumference (C) is known is:
r = C / (2π)