The figure shows a container ²₃ filled with water. The container is made up of two cuboids. The top cuboid has a square base of length 35 cm and height of 31 cm. The bottom cuboid has a square base of length 7 cm and height 20 cm. Find the height of the water level from the base of the container.
Volume of the top cuboid
= 35 x 35 x 31
= 37975 cm³ 

Volume of the bottom cuboid
= 7 x 7 x 20
= 980 cm³ 

Total volume
= 37975 + 980
= 38955 cm³ 

1 container = 38955 cm^3 
2₃ container = 38955 x ²₃ = 25970 cm³ 

Volume of water in the top cuboid
= 25970 - 980
= 24990 cm³ 

Base Area of the top cuboid
= 35 x 35
= 1225 cm² 

Height of water in the top cuboid
= 24990 ÷ 1225
= 20.4 cm

Height of water from base
= 20.4 + 20
= 40.4 cm

Answer(s): 40.4 cm