A container measuring 24 cm by 18 cm by 45 cm was
13 filled with water at first. Charlie 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 Charlie pour into container? Give your answer in mℓ.
- Charlie then poured all the water in the container into several identical flasks. Given that each flask can hold at least 1.7 ℓ of water, what is the least number of flasks he would need?
(a)
Height of water in the container at first
=
13 x 45
= 15 cm
Increase in the height of water in the container
= 20 - 15
= 5 cm
Volume of water poured into the container
= 24 x 18 x 5
= 2160 mℓ
(b)
Volume of the water after some water was poured in
= 24 x 18 x 20
= 8640 cm
3
1.7 ℓ = 1700 mℓ
Number of flasks
= 8640 ÷ 1700
= 5 r 140
Least number of flasks that he would need
= 5 + 1
= 6
Answer(s): (a) 2160 mℓ; (b) 6