Q2 of 63 Page 20

If the volume of a right circular cone of height 9 cm is 48π cm3, find the diameter of its base.

We have ,


Volume of cone = 48π cm3


Height of cone h = 9 cm


= 1/3πr2h = 48π


= r2= 16 r = 4 cm


Hence diameter of its base = 2 × radius = 2×4 = 8 cm


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