Question 172833
100*40*50=200,000 cm^3 is the volume of the aquarium.
100*40*40=160,000 cm^2 is the volume of water.
40*20*10=8,000 cm^3 is the volume of the brick.
160,000+8,000=168,000 is the volume of the water plus the brick.
100*40*x=168,000
4000x=168,000
x=168,000/4000
x=42 cm is the new water level
42-40=2 cm rise in water level due to the addition of the brick.