Question

find the perimeter of a square whose area is 1600 m2

Answer 1

$$\begin{gathered} \mathrm{Let}\mathrm{the}\mathrm{length}\mathrm{of}\mathrm{each}\mathrm{side}\mathrm{of}\mathrm{the}\mathrm{square}=\mathrm{s} \\ \mathrm{Now},\mathrm{area}\mathrm{of}\mathrm{square}=1600{\mathrm{m}}^2 \\ \Rightarrow {\mathrm{s}}^2=1600 \\ \Rightarrow \mathrm{s}=40\mathrm{m} \\ \mathrm{Now},\mathrm{perimeter}=4\mathrm{side}=4\times 40=160\mathrm{m} \end{gathered}$$