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From a sq polywood sheet of side 10dm to circular sheet of radius 3 dm and 4 dm Are cut out what is the Area of remaining sheet

2
by div234

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by div234

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Ar.of sq.-ar. of cicle=ar. of remaining part

100-2x22(9+16)/7

100-78.6

21.4

100-2x22(9+16)/7

100-78.6

21.4

area of Polywood sheet =side²=10×10=100dm²

area of circle of 3dm=πr²=π9dm²

are of circle of radius 4dm²

ATQ

100-π(9+16)=100-25×22/7=100-78.5=21.5dm²