Volume of irregular shapes

Question

Explain why we are able to use water displacement to find the volume of the irregular objects in cm3?

Answer 1

1 mL of water = 1 cm^3 = 1 gram

Answer 2

The volume of two objects = sum of the volume of each.

V₃=V₁+V₂ combined volume= sum of water volume + another object's volume

Take the volume of water before an object is submerged in it, call it V₁. Then submerge the irregular object (or any object no matter how regular) and the water level rises. The combined volume, call it V₃ is greater then the original water volume by exactly the amount of the volume of the submerged object V₂ = V₃-V₁

While this calculation could be made for irregular shaped objects, it works for any object, no matter how irregular or regularly shaped