Container Y and Z are identical containers with the same base area and height. Container Y is filled to the brim with water while Container Z is empty. After 244 cm³ of water from Container Y is poured into Container Z, the depth of water in Container Z is ¹₈ the depth of water in Container Y. If the height of Container Z is 36 cm, what is the base area of Container Z?
The depth of water is proportional to the volume of water.

After water from Container Y is poured into Container Z:

Volume of water in Container Y : Volume of water in Container Z
 8 : 1

1 u = 244

Total volume of Container Z
= 8 u + 1 u
= 9 u
= 9 x 244
= 2196 cm³

Base area of Container Z
= 2196 ÷ 36
= 61 cm²

Answer(s): 61 cm²