Find the radius of a circle with a circumference of 64 inches?

1 Answer
Edric Y.
Oct 17, 2017

#r = 32/(pi) ~~10.186#

Explanation:

#pi# is the ratio between a circle's circumference and diameter.
In other words,
#C = pid = 2pir#

Plug in your information:
#64 = 2pir#

#64/(2pi) = (cancel(2pi)r)/cancel(2pi)#

#64/(2pi) = r#

#32/(pi) = r#

#r~~10.186#

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