Container B and C are identical containers with the same base area and height. Container B is filled to the brim with water while Container C is empty. After 232 cm³ of water from Container B is poured into Container C, the depth of water in Container C is ¹₈ the depth of water in Container B. If the height of Container C is 29 cm, what is the base area of Container C?
The depth of water is proportional to the volume of water.

After water from Container B is poured into Container C:

Volume of water in Container B : Volume of water in Container C
 8 : 1

1 u = 232

Total volume of Container C
= 8 u + 1 u
= 9 u
= 9 x 232
= 2088 cm³

Base area of Container C
= 2088 ÷ 29
= 72 cm²

Answer(s): 72 cm²