Question

a rectangular piece of land measures 0.8 km by 0.6 km . each side is to be fenced with three rows of wire . find the length of the wire needed . if the cost of fencing is 50 rupees per metre , find the cost of fencing the land . ​

Answer 1

Answer:

perimeter of the wire is2(0.8+0.6) km

=2×1.4 km

=2.8 km

as each side is to be fenced with three rows if wire so the length needed 3×2.8 km=8.4 km

=8.4×1000 m

=8400 m

if the cost of fencing is 50 rupees per metre so the total cost of fencing is

Rs 8400×50

=Rs 4,20,000