A rectangular tank measuring 60 cm by 49 cm by 39 cm was filled with water to a height of 24 cm at first. After 7 completely filled identical jugs of water were poured into the tank, the new water level in the tank became 34 cm.
- Find the volume of water in each jug in cubic centimetres.
- How much more water would be needed to fill the tank completely? (Give your answer in litres.)
(a)
Difference in the height of the new and old water level
= 34 - 24
= 10 cm
Total volume of water added
= 49 x 60 x 10
= 29400 cm
3 Volume of water in each jug
= 29400 ÷ 7
= 4200 cm
3 (b)
Difference in the height of the tank and the water after 7 jugs of water were poured in
= 39 - 34
= 5 cm
Volume of water needed to fill the tank completely
= 49 x 60 x 5
= 14700 cm
3 1000 cm
3 = 1 ℓ
14700 cm
3 = 14.7 ℓ
Answer(s): (a) 4200 cm
3; (b) 14.7 ℓ