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25-11-2016
Mathematics

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the circumference of a circle is 12 pi inches. find its radius and area the radius of the circle isin
the area of the circle is _in^2

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MissPhiladelphia MissPhiladelphia

25-11-2016

The circumference of a circle has the formula: 2*pi*r. So, we could easily determine the value of r.

C = 2*pi*r
12*pi = 2*pi*r
12 = 2r
r = 12/2
r = 6 inches

Knowing the r, we could find the area which has the formula

A = pi*r^2
A = pi*6^2
A = 113.1 square inches

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