Sarthaks Test
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A right angled triangle whose sides are 3 cm, 4 cm and 5 cm is revolved about the sides containing the right angle in two days. Find the difference in volumes of the two cones so formed. Also, find their curved surfaces.

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(i) Given that radius of cone  (r1) = 4cm

(ii) Given radius of second cone  (r2) = 3cm

Difference in volumes of two cones  (V) = V1 - V2

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