A container measuring 26 cm by 18 cm by 45 cm was
15 filled with water at first. Tom poured some water into the container. In the end, the height of the water level in the container was 15 cm as shown.
- How much water did Tom pour into container? Give your answer in mℓ.
- Tom then poured all the water in the container into several identical pitchers. Given that each pitcher can hold at least 1.6 ℓ of water, what is the least number of pitchers 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
= 15 - 9
= 6 cm
Volume of water poured into the container
= 26 x 18 x 6
= 2808 mℓ
(b)
Volume of the water after some water was poured in
= 26 x 18 x 15
= 7020 cm
3
1.6 ℓ = 1600 mℓ
Number of pitchers
= 7020 ÷ 1600
= 4 r 620
Least number of pitchers that he would need
= 4 + 1
= 5
Answer(s): (a) 2808 mℓ; (b) 5