Question

$\text{The dimensions of a rectangular plot}$ $\text{of land is 4 km and 2 km, respectively.}$
$\text{Find the cost of fencing the plot at the}$ $\text{rate of ₹30 per meter.}$

• A. ₹2,80,000
• B. ₹3,60,000
• C. ₹3,20,000
• D. ₹2,40,000

Answer 1

The correct option is B ₹3,60,000

$\text{We have to find the cost of fencing}$
$\text{the rectangular plot.}$

$\text{Length (l) = 4 km}$
$\text{Breadth (b) = 2 km}$

$\text{Let's find the perimeter first.}$


$\text{The perimeter of the given region}$ $\text{is 12 km.}$

$\text{It is given that the cost of fencing}$ $\text{1 m is ₹30.}$

$\text{So, let's convert the perimeter into}$ $\text{m first.}$

$\text{We know that,}$
$\text{1 km =}$ $\text{1000 m}$


$\text{Hence, multiply 12 with 1000.}$

$\text{So, 12 km}=12\times 1\text{km}$
$=12\times 1000\text{m}$
$=12,000\text{m}$

$\text{Now, let's calculate the cost of}$ $\text{fencing.}$


$\text{Therefore, the total cost of fencing}$ $\text{is ₹3,60,000.}$