An irregular shaped object is dropped into rectangular prism, that is 40 cm by 30 cm by 20 cm deep. The water rises 0.25 cm. What is the volume of the object ?

Question

Water displacement to calculate volume

Answer 1

V=l*w*h

V=40*30*20

V=24,000 cm³

 

V=40*30*20.25

V=24,300 cm³

the volume of the object is 300 cm³

 

suppose you took out 300 cm²

the volume would be 24,000-300=23,700 cm³

the length and width would stay the same, so 40*30=1200 and 23,700/1200=19.75, which is 0.25 cm less in depth