Question

if cone hemisphere cylinder are on the same base and having the same height then the ratio of their volumes

Answer 1

Since the three solids are on the same base with same height
for hemisphere
radius= r cm
Volume=2/3πr³

for cone
radius=height =r cm
Volume=1/3πr²h=1/3πr³

for cylinder
radius= height=r cm
Volume=πr²h=πr³

The ratio of
Volume of cylinder:volume of hemisphere:Volume of cone
=    πr³:2/3πr³:1/3πr³
=1:2/3:1/3
=3:2:1

Therefore the ratio of the given solids is 3:2:1

Hope it helped you!! :)