First Part: A cube has all equal sides and therefore the formula of: -Volume of Cube=side³ =3³=27 cm³ -Volume of Cuboid=Area of base×Height of prism 1st prism =4×3×1=12 cm³ 2nd prism =7×4×9=252 cm³ 3rd prism =3.5×5×6=105 cm³ Second part: Volumes are given with one side missing V=Area of base×Height of Prism 1st prism 360=6×12×x 360=72x [tex] \frac{360}{72} [/tex]=[tex] \frac{72x}{72} [/tex] 5 cm=x Check: V=6×12×5=360 cm³ 2nd question: break it into 2 parts: 1st: find the volume of the first cuboid: V=3×3×4=36 cm³ So now we know the volume of the second cuboid since both of them have the same volume. 2nd: 36=6×4×x 36=24x [tex] \frac{36}{24} = \frac{24x}{24} [/tex] 1.5 cm=x Check: 1.5×6×4=36 cm³