# The area of a rectangle plot is 391 m^2 and its breadth is 17m. Find the length of the plot and the cost of fencing it at the rate of Rs 7.50 per metre.

Area of a rectangle= $length\times breadth$
$length=\frac{area}{breadth}=\frac{391}{17}m=23m$
Perimeter of the rectangular plot=2(l+b)
$=2(23m+17m)=(2\times 40)m=80m$
$\therefore$ The cost of fencing the rectangular plot
$=Rs(7.50\times 80)=Rs 600$

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