A rectangular piece of land measures 0.7km and 0.5 km each side is to be fenced with a 4 rows of wires what is the length of the wire needed

9.6 km.

Step-by-step explanation:

The dimensions of the rectangular plot of land are given by 0.7 km by 0.5 km.

Therefore, the length of the rectangle is 0.7 km and its width is 0.5 km.

Therefore, the perimeter of the plot is 2 (L + W) = 2 (0.7 + 0.5) = 2.4 km

Now, we have to fence the plot with a 4 row wire.

Hence, the total length of the wire that will be required will be (4 * 2.4) = 9.6 km. (Answer)