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Mathematics 18 Online
OpenStudy (anonymous):

A metal washer 1 cm in diameter is pierced by a 1/2 cm hole. What is the area of one face of the washer?

OpenStudy (anonymous):

is there some sort of furmula? am i just going to subtract

ganeshie8 (ganeshie8):

|dw:1367138888780:dw|

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