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OpenStudy (anonymous):
The radius of the outer circle is two inches longer than 3 times the radius of the inner circle. If the area of the shaded region is 180Pi square inches, what is the length of the radius of the inner circle??? plz help im stuck without the formula
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OpenStudy (anonymous):
pls draw the diagram . then only we can come to know about the shaded region!
OpenStudy (anonymous):
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