Monday
September 1, 2014

Homework Help: math

Posted by Thomas on Sunday, January 5, 2014 at 10:42pm.

A circle has an area of 25 pi cm^2.If a circle is drawn within that circle with a diameter equal to the radius of the first circle, what is the area of the second circle?

a. 2 1/2 pi cm^2
b. 4 1/4 pi cm^2
c. 5 1/4 pi cm^2
d. 6 1/4 pi cm^2
e. 7 1/2 pi cm^2

please answer and explain

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