31.
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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:
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Answer:
Answer: Option C
Explanation:
2(15 + 12) x h = 2(15 x 12)
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15 x 12 x
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20
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m3
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= 1200 m3.
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