A container measuring 23 cm by 20 cm by 45 cm was
15 filled with water at first. Fabian poured some water into the container. In the end, the height of the water level in the container was 18 cm as shown.
- How much water did Fabian pour into container? Give your answer in mℓ.
- Fabian then poured all the water in the container into several identical flasks. Given that each flask can hold at least 1.6 ℓ of water, what is the least number of flasks he would need?
(a)
Height of water in the container at first
=
15 x 45
= 9 cm
Increase in the height of water in the container
= 18 - 9
= 9 cm
Volume of water poured into the container
= 23 x 20 x 9
= 4140 mℓ
(b)
Volume of the water after some water was poured in
= 23 x 20 x 18
= 8280 cm
3
1.6 ℓ = 1600 mℓ
Number of flasks
= 8280 ÷ 1600
= 5 r 280
Least number of flasks that he would need
= 5 + 1
= 6
Answer(s): (a) 4140 mℓ; (b) 6