3 identical 9-cm cubes are placed in an empty rectangular container of length 88 cm and width 25 cm. The container is then filled with water from a tap flowing at a rate of 6 litres per minute. It takes 13 minutes to fill up ¹₂ of the container. What is the height of the container? Correct your answer to 1 decimal place.
Volume of 1 cube
= 9 x 9 x 9
= 729 cm³ 

Volume of 3 cubes
= 3 x 729
= 2187 cm³ 

1 ℓ = 1000 mℓ
6 ℓ = 6000 mℓ

Volume of water in the container
= 13 x 6000
= 78000 mℓ

Volume of ¹₂ of the container
= 78000 + 2187
= 80187 mℓ

Volume of the container
= 80187 ÷ ¹₂
= 80187 x ²₁
= 160374 mℓ

Base area
= 88 x 25
= 2200 cm² 

Height of the container
= 160374 ÷ 2200
≈ 72.9 cm

Answer(s): 72.9 cm