Volume is the amount of space a 3D object takes up.
We measure it in cubic units.
To find the volume of a box:
Length × Width × Height
A box is 5 units long, 3 units wide, and 2 units tall.
Volume = 5 × 3 × 2 = 30 cubic units
Volume helps us measure space in boxes, containers, and rooms — very useful in science, building, and everyday life.