Find the height of a cuboid of volume 100 cm³, whose length and breadth are 5 cm and 4 cm respectively.

$$\begin{gathered} \mathrm{Let}\mathrm{us}\mathrm{suppose}\mathrm{that}\mathrm{the}\mathrm{height}\mathrm{of}\mathrm{the}\mathrm{cuboid}\mathrm{is}h\mathrm{cm}. \\ \mathrm{Given}: \\ \mathrm{Volume}\mathrm{of}\mathrm{the}\mathrm{cuboid}=100{\mathrm{cm}}^3 \\ \mathrm{Length}=5\mathrm{cm} \\ \mathrm{Breadth}=4\mathrm{cm} \\ \mathrm{Now},\mathrm{volume}\mathrm{of}\mathrm{the}\mathrm{cuboid}=\mathrm{length}\times \mathrm{breadth}\times \mathrm{height} \\ \Rightarrow 100=5\times 4\times h \\ \Rightarrow 100=20\times h \\ \therefore h=\frac{100}{20}=5\mathrm{cm} \end{gathered}$$