Question

A warehouse is used as a granary. It is in the shape of a cuboid surmounted by half-cylinder. The base of ware house is 6m x 14m and its height is 8m. Find the surface area of the non cuboidal part of the ware house.

Answer 1

Height of the cylinder will become the length of the cylinder 
so,  h = 14m
diametre the cylinder will become the breadth of the cubiod 
so, r = 3m 
surface area of non cubiodal part = curved surface area of cylinder divied by 2 
so ,
= 22/7 * 3 * 14
= 132 m2

Answer 2

Dimensions of cuboid are 6*14*8 m

∴ height of cylinder = 14 m
and radius of base = 6/2 m = 3m

Now, SA of non- cuboidal part = CSA of cylinder/2
                                                = 2πrh/2
                                                 = πrh
                                                 = 22/7 * 3 * 2 
                                                 =132 m²