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Find the volume of the right circular cone with

(i) Radius 6cm, height 7cm.

(ii) Radius 3.5cm, height 12cm.

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264, 154

154, 264

278, 187

638, 152

answer is A.

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Detailed Solution

Concept- Using geometrical formula for volume of cone.
Volume of cone =

13 π r 2 h

Volume of cone is given by formula,
Volume of cone =

13 π r 2 h

Putting values given in above formula, we get-
(i) Radius 6cm, height 7cm.
Volume of cone =

13 × 227 × (6) 2 × 7 = 264 c m 3

(ii) Radius 3.5cm, height 12cm.
Volume of cone =

13 × 227 × (3.5) 2 × 12 = 154 c m 3

Hence, correct option is 1) 264, 154

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