A container measuring 20 cm by 13 cm by 45 cm was
13 filled with water at first. Owen poured some water into the container. In the end, the height of the water level in the container was 24 cm as shown.
- How much water did Owen pour into container? Give your answer in mℓ.
- Owen 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 45
= 15 cm
Increase in the height of water in the container
= 24 - 15
= 9 cm
Volume of water poured into the container
= 20 x 13 x 9
= 2340 mℓ
(b)
Volume of the water after some water was poured in
= 20 x 13 x 24
= 6240 cm
3
1.1 ℓ = 1100 mℓ
Number of flasks
= 6240 ÷ 1100
= 5 r 740
Least number of flasks that he would need
= 5 + 1
= 6
Answer(s): (a) 2340 mℓ; (b) 6