The curved surface area of a hemisphere of radius 6cm is equal to 2/5 of the curved surface area of a cone of radius 12cm.Find the volume of the cone.
Asked by adalroshan2464 | 17th Nov, 2018, 05:56: PM
Curved surface area of hemisphere = 2πr2 = 2×π×6×6 = 72π cm2
Curved surface area of cone whose radius R and height h =
It is given that (2/5)th of curved surface area of cone is curved surface area of hemi-sphere .
solving eqn.(1) for h, we get h = 9 cm
Volume of cone =
Answered by Thiyagarajan K | 17th Nov, 2018, 10:12: PM
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