A container measuring 20 cm by 17 cm by 45 cm was
15 filled with water at first. Cole poured some water into the container. In the end, the height of the water level in the container was 14 cm as shown.
- How much water did Cole pour into container? Give your answer in mℓ.
- Cole 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
=
15 x 45
= 9 cm
Increase in the height of water in the container
= 14 - 9
= 5 cm
Volume of water poured into the container
= 20 x 17 x 5
= 1700 mℓ
(b)
Volume of the water after some water was poured in
= 20 x 17 x 14
= 4760 cm
3
1.5 ℓ = 1500 mℓ
Number of flasks
= 4760 ÷ 1500
= 3 r 260
Least number of flasks that he would need
= 3 + 1
= 4
Answer(s): (a) 1700 mℓ; (b) 4