if the cone of height is twice then find percentage in volume
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change in volume if h = 2h in a cone
V1 = 1/3πr²h
V2 = 1/3πr²2h
V1 : V2 = 1/3πr²h : 1/3πr²2h
V1 : V2 = 1 : 2
increase of volume is 100%
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