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A hall is 15 m long and 12 m broad. If the sum of the areas of the floor and the ceiling is equal to the sum of the areas of four walls, the volume of the hall is:

720
900
1200
1800

Correct Answer: 1200

Explanation:

2(15 + 12) x h = 2(15 x 12)

⟹ h =	180	m =	20	m.
	27		3

∴ Volume =	❨	15 x 12 x	20	❩m³	= 1200 m³.
			3

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