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A himesphrical depression is cut from …

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A himesphrical depression is cut from one face of the cubical wooden block such that the diametre 1 of the hemisphere is equal to the edge of cube.determine the surface area of the remaning solid.

Posted by Kc Sourav 6 years ago

CBSE > Class 10 > Mathematics

3 answers

Shivang Singh 6 years ago

first find c.s.a of cylinder then find c.s.a of hemisphere and subtract it by cylinder and the radius is half the diameter

1Thank You

Chetan Handa 6 years ago

Thanks

0Thank You

Yogita Ingle 6 years ago

According to the question,

Diameter of hemisphere = Edge of cube
= l

Radius of hemisphere =

Curved Surface Area of hemisphere = 2 π r²
Surface Area of cube = 6(Edge)2

Total surface area of solid = Surface area of cubical part + CSA of hemispherical part - Area of base of hemispherical part

= 6 (Edge)² + 2πr² – πr²

= 6 (Edge)² + πr²

TSA of Solid = 6l² + π x ()²

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