A container measuring 28 cm by 25 cm by 42 cm was
13 filled with water at first. Pierre poured some water into the container. In the end, the height of the water level in the container was 19 cm as shown.
- How much water did Pierre pour into container? Give your answer in mℓ.
- Pierre then poured all the water in the container into several identical pitchers. Given that each pitcher can hold at least 1.1 ℓ of water, what is the least number of pitchers 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
= 19 - 14
= 5 cm
Volume of water poured into the container
= 28 x 25 x 5
= 3500 mℓ
(b)
Volume of the water after some water was poured in
= 28 x 25 x 19
= 13300 cm
3
1.1 ℓ = 1100 mℓ
Number of pitchers
= 13300 ÷ 1100
= 12 r 100
Least number of pitchers that he would need
= 12 + 1
= 13
Answer(s): (a) 3500 mℓ; (b) 13