Question

A hemispherical depression is cut from one face of cubical block, such that diameter ‘l of hemisphe
is equal to the edge of cube. Find the surface area of the remaining solid.​

Answer 1

Answer

31l²/7

Step-by-step explanation:

Side of cube= l

Also, diameter of hemisphere=l

Radius= l/2

Surface area of remaining solid = surface area of cube - surface area of hemisphere

6l²- 2×22/7× l/2×l/2

6l²-11l²/7

By taking LCM

42l²-11l²/7

= 31l²/7