The figure not drawn to scale shows a cubical tank which is
13 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 12 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 -
13 =
23 Volume of water needed to fill the tank to the brim
=
23 x 240 x 240 x 240
= 9216000 mℓ
1000 mℓ = 1 ℓ
9216000 ÷ 1000 = 9216 ℓ
(b)
Time needed to fill the tank completely
= 9216 ÷ 12
= 768 min
60 min = 1 h
768 min = 12 h 48 min
Answer(s): (a) 9216 ℓ; (b) 12 h 48 min