A container measuring 20 cm by 12 cm by 54 cm was
13 filled with water at first. Julian poured some water into the container. In the end, the height of the water level in the container was 25 cm as shown.
- How much water did Julian pour into container? Give your answer in mℓ.
- Julian then poured all the water in the container into several identical flasks. Given that each flask can hold at least 1.1 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
= 25 - 18
= 7 cm
Volume of water poured into the container
= 20 x 12 x 7
= 1680 mℓ
(b)
Volume of the water after some water was poured in
= 20 x 12 x 25
= 6000 cm
3
1.1 ℓ = 1100 mℓ
Number of flasks
= 6000 ÷ 1100
= 5 r 500
Least number of flasks that he would need
= 5 + 1
= 6
Answer(s): (a) 1680 mℓ; (b) 6