Question

Find the cost of fencing a rectangular park of lenght $4m$ and breadth $2m$ at the rate of $₹12perm$.

Answer 1

Step-1: Finding the perimeter of the rectangular park:

Perimeter of the park, $P$ $=2(length+breadth)$

$$\begin{gathered} P=2(4+2) \\ \Rightarrow P=2\times 6 \\ \Rightarrow P=12m \end{gathered}$$

Hence, the perimeter of rectangular park is $12m$.

Step-2: Finding the cost of fencing:

Cost of fencing $=$ Rate $\times$Perimeter of park

$$\begin{gathered} =12\times 12 \\ =₹144. \end{gathered}$$

Thus, the cost of fencing a rectangular park is $₹144$.