Question

Find the cost of fencing a square park of side $250\text{m}$ at the rate of $₹20$ per meter.

Answer 1

Step 1: Find the area of square with side $s$ using the formula of the perimeter, $P=4s$.

$\begin{array}{rcl}P& =& 4\times 250\\ & =& 1000\text{m}\end{array}$

Step 2: The cost of fencing per meter is $₹20$. Find the cost of fencing $1000m$.

$20\times 1000=₹20,000$

Hence, the cost of fencing a square park is $₹20,000$.