Question 40

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waecmaths question: 

A bucket holds 10 litres of waters. How many buckets of water will fill a reservoir of size 8m × 7m × 5m(1 litres = 1000cm3)

Option A: 

28

Option B: 

280

Option C: 

2800

Option D: 

28000

waecmaths solution: 

100cm = 1m

Volume = length × width × height

Volume = 800cm × 700cm × 500cm =280000000cm3

280000000cm3 to litres gives 280000litres  (1000cm3 =1litres)

The number of buckets that will be needed to fill the reservoir is 280000litres ÷10 litres = 28000 bucket (Option D)

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