A container measuring 22 cm by 19 cm by 42 cm was
13 filled with water at first. Cole poured some water into the container. In the end, the height of the water level in the container was 20 cm as shown.
- How much water did Cole pour into container? Give your answer in mℓ.
- Cole then poured all the water in the container into several identical jugs. Given that each jug can hold at least 1.6 ℓ of water, what is the least number of jugs he would need?
(a)
Height of water in the container at first
=
13 x 42
= 14 cm
Increase in the height of water in the container
= 20 - 14
= 6 cm
Volume of water poured into the container
= 22 x 19 x 6
= 2508 mℓ
(b)
Volume of the water after some water was poured in
= 22 x 19 x 20
= 8360 cm
3
1.6 ℓ = 1600 mℓ
Number of jugs
= 8360 ÷ 1600
= 5 r 360
Least number of jugs that he would need
= 5 + 1
= 6
Answer(s): (a) 2508 mℓ; (b) 6