Question

The area of a rectangle is 650 cm² and its breadth is 13 cm. The perimeter of the rectangle is
(a) 63 cm
(b) 130 cm
(c) 100 cm
(d) 126 cm

Answer 1

(d) 126 cm
Let length of the rectangle be L cm.
Area of the rectangle = 650 cm²
Area of the rectangle = ($\mathrm{L}\times 13$) cm²
$$\begin{gathered} \Rightarrow (\mathrm{L}\times 13)=650 \\ \Rightarrow \mathrm{L}=\frac{650}{13}=50 \\ \mathrm{Length}\mathrm{of}\mathrm{the}\mathrm{rectangle}\mathrm{is}50\mathrm{cm} \end{gathered}$$

Perimeter of the rectangle = 2(Length + Breadth) cm = 2(50+13) cm = 126 cm