A container measuring 26 cm by 20 cm by 40 cm was
15 filled with water at first. Lee poured some water into the container. In the end, the height of the water level in the container was 12 cm as shown.
- How much water did Lee pour into container? Give your answer in mℓ.
- Lee then poured all the water in the container into several identical flasks. Given that each flask can hold at least 1.3 ℓ of water, what is the least number of flasks he would need?
(a)
Height of water in the container at first
=
15 x 40
= 8 cm
Increase in the height of water in the container
= 12 - 8
= 4 cm
Volume of water poured into the container
= 26 x 20 x 4
= 2080 mℓ
(b)
Volume of the water after some water was poured in
= 26 x 20 x 12
= 6240 cm
3
1.3 ℓ = 1300 mℓ
Number of flasks
= 6240 ÷ 1300
= 4 r 1040
Least number of flasks that he would need
= 4 + 1
= 5
Answer(s): (a) 2080 mℓ; (b) 5