An open rectangular box has internal. dimensions 2cm long, 20cm wide and 22.5cm deep .lf the box is made of wood 2.5cm thick , calculate the wood in cm cube
inside vol ... 2 * 20 * 22.5 cm^3
outside vol ... (2 + 5) * (20 + 5) * (22.5 + 2.5) cm^3
wood vol = outside vol - inside vol