6. Five marks example problem V

A hemispherical section is cut out from one face of a cubical block (Fig.7.42) such that the diameter l of the hemisphere is equal to side length of the cube. Determine the surface area of the remaining solid.

 

 

Answer:

 

The surface area of the remaining solid \(=\) $\frac{i}{i}\left(i+\mathrm{\pi }\right)i^i$ sq. units