question_answer 3)

Find the breadth of a rectangular plot of land, if its area is \[\text{44}0\text{ }{{\text{m}}^{\text{2}}}\] and the length is 22 m. Also find its perimeter.

Answer:

                Area of the rectangular plot of land \[=l\times b\] \[\Rightarrow \] \[\text{44}0=\text{22}\times \text{b}\]                 \[\Rightarrow \] \[b=\frac{440}{22}=\text{20 m}\]                 \[\therefore \]  Perimeter of the rectangular plot of land \[=2\times (l+b)\] \[=\text{2}\times (\text{22}+\text{2}0)=\text{84 m}.\]