A container measuring 25 cm by 22 cm by 51 cm was
13 filled with water at first. Perry 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 Perry pour into container? Give your answer in mℓ.
- Perry 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
=
13 x 51
= 17 cm
Increase in the height of water in the container
= 24 - 17
= 7 cm
Volume of water poured into the container
= 25 x 22 x 7
= 3850 mℓ
(b)
Volume of the water after some water was poured in
= 25 x 22 x 24
= 13200 cm
3
1.5 ℓ = 1500 mℓ
Number of flasks
= 13200 ÷ 1500
= 8 r 1200
Least number of flasks that he would need
= 8 + 1
= 9
Answer(s): (a) 3850 mℓ; (b) 9