The cost of levelling and turfing a square lawn at Rs 2.50 per

First, we have to find the area of the square lawn, which the total cost divided by the cost of levelling and turfing per square metre:

Area of a square $=\frac{13322.5}{2.5}=5329 \mathrm{~m}^{2}$

The length of one side of the square is equal to the square root of the area. We will use the long division method to find it as shown below:

$\therefore$ Length of one side of the square $=73 \mathrm{~m}$

The circumference of the square is $73 \times 4=292 \mathrm{~m}$

$\therefore$ Total cost of fencing the lawn at Rs. 5 per metre $=292 \times 5=$ Rs. 1460