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2016-03-17T15:40:17+05:30

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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!! :)
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