A container measuring 20 cm by 14 cm by 54 cm was
13 filled with water at first. Fred poured some water into the container. In the end, the height of the water level in the container was 26 cm as shown.
- How much water did Fred pour into container? Give your answer in mℓ.
- Fred 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
= 26 - 18
= 8 cm
Volume of water poured into the container
= 20 x 14 x 8
= 2240 mℓ
(b)
Volume of the water after some water was poured in
= 20 x 14 x 26
= 7280 cm
3
1.1 ℓ = 1100 mℓ
Number of flasks
= 7280 ÷ 1100
= 6 r 680
Least number of flasks that he would need
= 6 + 1
= 7
Answer(s): (a) 2240 mℓ; (b) 7