Question

27. The area of a square plot is 0.0324 hectares. It was fenced using 3

strands of wire. What was the total length of wire used?
O A 72
O 8.144 m
O com
O 0.216​

Answer 1

Answer: 0.216 km .

Explanation:

Given, The area of a square plot is 0.0324 hectares.

Since , 1 hectare =10,000 meters

Then, the area of a square plot = 10,000 x 0.0324

= 324 meters

Area of square = side²

`\Rightarrow\ (\text{side})^2=324\\\\\Rightarrow\ \text{side}=√(324)=18\ m`

Perimeter = 4(side) = 4 x 18 = 72 m

Since it was fenced using 3 strands of wire.

So, Total length of wire used = 3 (Perimeter) = 3 (72)m

= 216 m

Hence, the total length of wire used 216 m.

In km , 216 m = 0.216 km [ 1 m = 0.001 km]

Hence, the correct option is 0.216 km .