This a conference of a circle is 36 pi inches. What is the radius of the circle?

1 Answer
May 7, 2018

#"radius "=18" inches"#

Explanation:

#"the circumference of a circle is calculated using the formula"#

#•color(white)(x)"circumference (C) "=2pir#

#"here C is given as "36pi#

#"equating the 2 gives"#

#2pir=36pi#

#"divide both sides by "2pi#

#(cancel(2pi) r)/cancel(2pi)=(36pi)/(2pi)#

#rArr" radius r "=18" inches"#