Cuboid is a solid box whose every surface is a rectangle of same AREA or different areas.A cuboid will have a length, breadth and height.Hence we can conclude that VOLUME is 3 dimensional. To measure the volumes we need to know the measure 3 sides.Explanation:Full SiteNavigationVolume of a CuboidCuboid is a solid box whose every surface is a rectangle of same area or different areas.A cuboid will have a length, breadth and height.Hence we can conclude that volume is 3 dimensional. To measure the volumes we need to know the measure 3 sides. Since volume involves 3 sides it is measured in cubic units.Units of VolumeVolume of a cuboid = (length × breadth × height) cubic units.= (l × b × h) cubic units. (Since area = ℓ × b)Volume of a cuboid = area of one surface × height cubic unitsLet us look at the given cuboid.The length of the cuboid = 5 cmThe breadth of the cuboid = 3 cmThe height of cuboid (thickness) = 2 cmThe number of 1 cm cubes in the given cuboid = 30 cubes = 5 × 3 × 2We FIND that volume of the given cuboid with length 5 cm, breadth 3 cm and height 2 cm is 30 cu cm.