RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 21. Mensuration-II (Volumes and Surface Areas of a Cuboid and a Cube)

Subject: Maths - Class 8th

Q. No. 12 of Exercise 21.2

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A village, having a population of 4000, required 150 litres water per head per day. It has a tank which is 20 m long, 15 m broad and 6 m high. For how many days will the water of this tank last?


Dimensions of water tank = 20m × 15m ×6m

Population of village = 4000

Water require per head per day = 150 litre

Total requirement of water per day = 150 ×4000 = 600000 litre

Volume of water tank =



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