Question

Find the cost of fencing a rectangular park of length $175\text{m}$ and breadth $125\text{m}$ at the rate of $₹12$ per meter.

Answer 1

Step 1: Find the perimeter $P$ of rectangular park with length $l$ and breadth $b$ using the formula of the perimeter, $P=2\left(l+b\right)$.

$\begin{array}{rcl}P& =& 2\left(175+125\right)\\ & =& 2\left(300\right)\\ & =& 600\text{m}\end{array}$

Step 2: The cost of fencing per meter is $₹12$. Find the cost of fencing $600\text{m}$.

$12\times 600=₹7,200$

Hence, the cost of fencing a rectangular park is $₹7,200$.