A container measuring 30 cm by 24 cm by 54 cm was
13 filled with water at first. Jeremy poured some water into the container. In the end, the height of the water level in the container was 21 cm as shown.
- How much water did Jeremy pour into container? Give your answer in mℓ.
- Jeremy then poured all the water in the container into several identical flasks. Given that each flask can hold at least 1.5 ℓ of water, what is the least number of flasks he would need?
(a)
Height of water in the container at first
=
13 x 54
= 18 cm
Increase in the height of water in the container
= 21 - 18
= 3 cm
Volume of water poured into the container
= 30 x 24 x 3
= 2160 mℓ
(b)
Volume of the water after some water was poured in
= 30 x 24 x 21
= 15120 cm
3
1.5 ℓ = 1500 mℓ
Number of flasks
= 15120 ÷ 1500
= 10 r 120
Least number of flasks that he would need
= 10 + 1
= 11
Answer(s): (a) 2160 mℓ; (b) 11