The figure not drawn to scale shows a cubical tank which is
14 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 13 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 -
14 =
34 Volume of water needed to fill the tank to the brim
=
34 x 260 x 260 x 260
= 13182000 mℓ
1000 mℓ = 1 ℓ
13182000 ÷ 1000 = 13182 ℓ
(b)
Time needed to fill the tank completely
= 13182 ÷ 13
= 1014 min
60 min = 1 h
1014 min = 16 h 54 min
Answer(s): (a) 13182 ℓ; (b) 16 h 54 min