Question

Find the number of square tiles of size 10 cm, required for dEcorating a wall 6m?4m.also find the total cost of the tiles required fOr this purpose of one tile costs $ 2.50

Answer 1

$$\begin{gathered} \mathrm{Dear}\mathrm{Student}, \\ \mathrm{Length}\mathrm{of}\mathrm{wall}=6\mathrm{m}=6\times 100\mathrm{cm}=600\mathrm{cm} \\ \mathrm{breadth}\mathrm{of}\mathrm{wall}=4\mathrm{m}=4\times 100\mathrm{cm}=400\mathrm{cm} \\ \mathrm{The}\mathrm{area}\mathrm{of}\mathrm{wall}=\mathrm{length}\times \mathrm{breadth}=600\times 400=240000{\mathrm{cm}}^2 \\ \mathrm{side}\mathrm{of}\mathrm{each}\mathrm{square}\mathrm{tile},\mathrm{s}=10\mathrm{cm} \\ \mathrm{area}\mathrm{of}1\mathrm{square}\mathrm{tile}={\mathrm{s}}^2={10}^2=100{\mathrm{cm}}^2 \\ \mathrm{Number}\mathrm{of}\mathrm{tiles}\mathrm{needed}=\frac{\mathrm{area}\mathrm{of}\mathrm{wall}}{\mathrm{area}\mathrm{of}1\mathrm{tile}}=\frac{240000}{100}=2400 \\ \mathrm{cost}\mathrm{of}1\mathrm{tile}=2.5\mathrm{dollars} \\ \mathrm{cost}\mathrm{of}2400\mathrm{dollars}=2400\times 2.5=6000\mathrm{dollars} \\ \mathrm{Regards} \end{gathered}$$