Split the composite into rectangular prisms, find each volume, then add them.

30 + 18 = 48

Volume = 48 cubic centimetres

More themes unlock on the teacher plan and above.

⚠️ ป.6 chapter 9 adds the COMPOSITE, not a new solid: the figure is built from rectangular prisms, so there is no cylinder, cone or sphere and no surface area. ป.5 counts the unit cubes before it uses the formula, the order its manual prescribes. “Volume” is for a solid and “capacity” for a container, even though the formula is identical. ⬜ The third method, cut-and-move, is not built yet.