A container measuring 23 cm by 15 cm by 45 cm was
15 filled with water at first. Ahmad 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 Ahmad pour into container? Give your answer in mℓ.
- Ahmad then poured all the water in the container into several identical flasks. Given that each flask can hold at least 1.7 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
= 12 - 9
= 3 cm
Volume of water poured into the container
= 23 x 15 x 3
= 1035 mℓ
(b)
Volume of the water after some water was poured in
= 23 x 15 x 12
= 4140 cm
3
1.7 ℓ = 1700 mℓ
Number of flasks
= 4140 ÷ 1700
= 2 r 740
Least number of flasks that he would need
= 2 + 1
= 3
Answer(s): (a) 1035 mℓ; (b) 3