The figure not drawn to scale shows a cubical tank which is
17 filled with water.
- What is the volume of water needed to fill up the tank to the brim?
- Water is added to the tank at a rate of 16 litres per minute. At this rate, how long will it take to fill the tank completely? Give your answer in this format. (Eg 1 h 20 min)
(a)
Fraction of water needed to fill the tank to the brim
= 1 -
17 =
67 Volume of water needed to fill the tank to the brim
=
67 x 280 x 280 x 280
= 18816000 mℓ
1000 mℓ = 1 ℓ
18816000 ÷ 1000 = 18816 ℓ
(b)
Time needed to fill the tank completely
= 18816 ÷ 16
= 1176 min
60 min = 1 h
1176 min = 19 h 36 min
Answer(s): (a) 18816 ℓ; (b) 19 h 36 min