Correct Answer - Option 4 : Rs. 1920
Given:
Length of garden = 40 m
Breadth of garden = 24 m
Cost of fening = Rs. 15 per m
Formula Used:
Perimeter of rectangle = 2 × (Length + Breadth)
Total cost = Perimeter × Per m cost of fencing
Calculation:
The perimeter of rectangle = Total length of fencing = 2 × (Length + Breadth)
⇒ Total length of fencing = 2 × (40 m + 24 m)
⇒ Total length of fencing = 2 × 64 m
⇒ Total length of fencing = 128 m
Total cost = Perimeter × Per m cost of fencing
⇒ Total cost = 128 m × 15
⇒ Total cost = Rs. 1920
∴ Total cost of fencing Rs. 1920.
The correct option is 4 i.e. Rs. 1920