The figure is not drawn to scale. Tank A measuring 54 cm by 41 cm by 12 cm contained 32.07 ℓ of water. Tank B measuring 40 cm by 25 cm by 37 cm contained 12 ℓ of water. Albert poured some water from Tank A into Tank B without spilling and the water level of Tank B rose to 33 cm. What was the height of water level left in Tank A?
1 ℓ = 1000 cm³
12 ℓ = 12000 cm³
32.07 ℓ = 32.07 x 1000 = 32070 cm³

Height of water in Tank B at first
= 12000 ÷ 40 ÷ 25
= 12 cm

Increase in the height of water in Tank B
= 33 - 12
= 21 cm

Volume of water poured into Tank B
= 40 x 25 x 21
= 21000 cm³ 

Volume of water left in Tank A
= 32070 - 21000
= 11070 cm³ 

Height of water left in Tank A
= 11070 ÷ 54 ÷ 41
= 5 cm

Answer(s): 5 cm