A conical tent is to accommodate 11 persons. Each person must have 4 sq. metres

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A conical tent is to accommodate 11 persons. Each person must have 4 sq. metres of the space on the ground and 20 cubic metres of air to breath. The height of the cone is :

Options:

A . 13 m

B . 14 m

C . 15 m

D . 16 m

Answer: Option C

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