Question

In a solid hemispherre two hemispheres have been removed from boh side find the volume if r=3.5and h=5

Answer 1

We know that,

Curved surface area of a hemisphere =2πr

2

So, when two solids hemispheres of same base radius are joined together along their bases, then

Curved surface area of newly formed solid sphere=2×2πr

2

=4πr

2

Hence, A is the correct option.