Question

The length of a rectangular plot of land is 50 m and its width is 30 m. A triple fence has to be put along its edges. If the wire costs 60 rupees permetre, what will be the total cost of the wire needed for the fence?

Answer 1

Perimeter of a rectangular plot

= 2 x length + 2 x breadth

= 2 x 50 + 2 x 30

= 100 + 60 – 160 m

For a triple fence, wire needed

= 3 x 160 = 480 m

Cost of the wire needed 

= wire needed x rate 

= 480 x 60 

= 28800 rupees 

∴ The total cost of the wire needed for the fence is ₹ 28,800