A container measuring 20 cm by 16 cm by 52 cm was
14 filled with water at first. Luis poured some water into the container. In the end, the height of the water level in the container was 20 cm as shown.
- How much water did Luis pour into container? Give your answer in mℓ.
- Luis 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
=
14 x 52
= 13 cm
Increase in the height of water in the container
= 20 - 13
= 7 cm
Volume of water poured into the container
= 20 x 16 x 7
= 2240 mℓ
(b)
Volume of the water after some water was poured in
= 20 x 16 x 20
= 6400 cm
3
1.1 ℓ = 1100 mℓ
Number of flasks
= 6400 ÷ 1100
= 5 r 900
Least number of flasks that he would need
= 5 + 1
= 6
Answer(s): (a) 2240 mℓ; (b) 6