Mathematics · Mensuration
It is required to construct a large rectangular hall to accommodate 500 persons, allowing 22.5 m3 space per person. The height of the hall is to be kept at 7.5 m, while the total inner surface area of the four walls must be 1200 m2. The length and breadth of the hall respectively are:
- 160 m and 20 m
- 250 m and 30 m✓
- 345 m and 35 m
- 440 m and 30 m
Correct answer
50 m and 30 m
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