Question

A wooden toy is made by scooping out a hemisphere of same radius from each of them is being 3.5 cm and it's base is of radius 3.5 cm,find the volume of the wood in the toy .(use π=22/7)
​

Answer 1

Given height of cylinder =10 cm
Radius of cylinder =3.5 cm

The volume of toy= Volume of cylinder −2×Volume of a hemisphere

=πr
2
h−(2×
3
2
​
πr
3
)
=[π(3.5)
2
×10]−(2×
3
2
​
×π(3.5)
205.251 cm
3