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OpenStudy (anonymous):
HELP WILL MEDAL AND FAN! Find the area of the circle: Inner radius is 4cm, Outer radius is 9cm.
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OpenStudy (anonymous):
Here are the options. A) 78.5cm^2 B) 31.4cm^2 C) 157cm^2 D) 204.1cm^2
ganeshie8 (ganeshie8):
are you trying to find the area of region between below two circles ? |dw:1440600185673:dw|
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