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Question

A sphere of radius 4 cm has the same volume as that of a cone with a circular base of radius 4 cm.The height of the cone is

A
12 cm
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B
16 cm
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C
20 cm
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D
24 cm
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Solution

The correct option is B 16 cm
Radius of sphere = radius of cone =4 cm
Volume of cone = 13πr2h
Volume of Sphere = 43πr3
Volume of cone = Volume of Sphere
13πr2h = 43πr3
h=4r
h=16 cm

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