Question

The length and breadth of a rectangular farmland is 12 m and 5 m respectively. Find the cost of ploughing the farmland at the rate of Rs.12 per $m^2$.

• A. Rs.120
• B. Rs.720
• C. Rs.360
• D. Rs. 240

Answer 1

The correct option is B

Rs.720

Given, length of the farmland = 12 m
Breadth of the farmland = 5 m
The rate of ploughing the farmland = Rs.12 per $m^2$.
Area of a rectangle = length $\times$ breadth
$\therefore$ Area of rectangular farmland = 12 $\times$ 5 = 60 $m^2$.

$\therefore$The total cost of ploughing = Total area $\times$ cost per unit area
= 60 $\times$ 12 = Rs.720.