Answer :
Answer: 0.216 km .
Step-by-step 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
[tex]\Rightarrow\ (\text{side})^2=324\\\\\Rightarrow\ \text{side}=\sqrt{324}=18\ m[/tex]
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 .