Question

A rectangular piece of land measures 0.7 km by 0.5 kilometre
each side is to be fenced with four rows of wires. What is the
length of the wire needed?​

Answer 1

Answer:

= 9600m

Step-by-step explanation:

$perimeter \: of \: rectangle = 2(l + b) \\ = 2(0.7 + 0.5) \\ = 2(1.2) \\ = 2.4km = 2400m \\ \\ if \: fenced \: with \: four \: rows \: of \: wire, \\ = 4 \times 2400 \\ = 9600m$

Therefore, the needed length of wire is 9600m