A container measuring 30 cm by 24 cm by 42 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 22 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 1.2 ℓ of water, what is the least number of flasks he would need?
(a)
Height of water in the container at first
=
13 x 42
= 14 cm
Increase in the height of water in the container
= 22 - 14
= 8 cm
Volume of water poured into the container
= 30 x 24 x 8
= 5760 mℓ
(b)
Volume of the water after some water was poured in
= 30 x 24 x 22
= 15840 cm
3
1.2 ℓ = 1200 mℓ
Number of flasks
= 15840 ÷ 1200
= 13 r 240
Least number of flasks that he would need
= 13 + 1
= 14
Answer(s): (a) 5760 mℓ; (b) 14