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

Answers (1)

Area of remaining sheet=Area of polywood sheet- Area of circle of 3 dm- Area of circle of 4 dm
area of Polywood sheet =side²=10×10=100dm²
area of circle of 3dm=πr²=9π dm²
are of circle of radius 4dm = 16π dm2
Area of the remaining sheet = 100-π(9+16)=100-25×22/7=100-78.5= 21.5 dm²

 

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