The figure shows a tank ³₄ filled with water. The tank is made up of two cuboids. The top cuboid has a square base of length 22 cm and height of 22 cm. The bottom cuboid has a square base of length 11 cm and height 16 cm. Find the height of the water level from the base of the tank.
Volume of the top cuboid
= 22 x 22 x 22
= 10648 cm³ 

Volume of the bottom cuboid
= 11 x 11 x 16
= 1936 cm³ 

Total volume
= 10648 + 1936
= 12584 cm³ 

1 tank = 12584 cm^3 
3₄ tank = 12584 x ³₄ = 9438 cm³ 

Volume of water in the top cuboid
= 9438 - 1936
= 7502 cm³ 

Base Area of the top cuboid
= 22 x 22
= 484 cm² 

Height of water in the top cuboid
= 7502 ÷ 484
= 15.5 cm

Height of water from base
= 15.5 + 16
= 31.5 cm

Answer(s): 31.5 cm