From a cubical piece of wood of side 21 cm a hemisphere is carved out in such a way that the diameter of the hemisphere is equal to the side the cubical piece.Find the surface area and volume of remaining piece
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Cubical volume =21*21*21=9261cm3
cubical surface area =6*21*21=2646cm2
diameter = side of cubical piece
radius =diameter/2
r=21/2=10.5cm
volume of new side =10.5*10.5*10.5=1157.625cm3
surface area of new side =6*10.5*10.5=661.5cm2
volume of remaining piece =9261-1157.625=8103.375cm2
surface area remaining piece 2646-661.5=1984.5cm2
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________________________
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Cubical volume =21*21*21=9261cm3
cubical surface area =6*21*21=2646cm2
diameter = side of cubical piece
radius =diameter/2
r=21/2=10.5cm
volume of new side =10.5*10.5*10.5=1157.625cm3
surface area of new side =6*10.5*10.5=661.5cm2
volume of remaining piece =9261-1157.625=8103.375cm2
surface area remaining piece 2646-661.5=1984.5cm2
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HOPE , IT HELPS ... ✌️
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