Question

a rectangular piece of land measures 7km by 5km each side is to be fenced with 4 rows of wires what is the length of the wire needed​

Answer 1

Answer:

Solution:

The perimeter of a rectangular piece of land = 2(Length + Breadth)

= 2(0.7+0.5)

= 2(1.2)

= 2.4 km

\because1km\ =\ 1000m

\therefore0.24\ =\ 1000\times0.24=2400 m.

Since 4 rows of wire is required.

\therefore2400\times4=9600 m.

\therefore9600\ m\ =\ 9.6\ km

Therefore, length of wire required is 9.6 km or 9600 m.

Answer 2

Step-by-step explanation:

calculate the perimeter and multiply it with 4