Question

Find the cost of fencing a square park with $4$ rows of wires at a rate of $Rs15.75$ per meter , if the side is $350m$long

Answer 1

Step 1 : Finding the perimeter of square

Perimeter of square $=4\times side$

$$\begin{gathered} =4\times 350m \\ =1400m \end{gathered}$$

Hence , the length of wire required for one row is $1400m$

Step 2 : Finding the length of $4$ rows of wire

Length of $4$ rows of wire$=$$4\times$length of one row

$$\begin{gathered} =4\times 1400 \\ =5600m \end{gathered}$$

Hence , length of wire required for fencing is $5600m$

step 3 : Finding cost of fencing

Cost of fencing $1m=Rs15.75$

Cost of fencing $5600m=Rs5600\times 15.75$

$=Rs88,200$

Hence , cost of fencing is $Rs88,200$