Question 5:
A hemispherical depression is cut out from one face of a cubical wooden block such that the diameter l of the hemisphere is equal to the edge of the cube. Determine the surface area of the remaining solid.
Answer:
Diameter of hemisphere = Edge of cube = l
Radius of hemisphere = 1/2
Total surface area of solid = Surface area of cubical part + CSA of hemispherical part − Area of base of hemispherical part
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