Answer: [tex]\dfrac{12}{5}\ km^2[/tex]
Step-by-step explanation:
Given
The area of land is [tex]6\frac{2}{5}\ km^2[/tex]
Daud divide the land into 8 equal plots
So, the area of a single small plot is
[tex]\Rightarrow \dfrac{\dfrac{30+2}{5}}{8}\\\\\Rightarrow \dfrac{32}{5\times 8}\\\\\Rightarrow \dfrac{4}{5}\ km^2[/tex]
The area of three such plots
[tex]\Rightarrow 3\times \dfrac{4}{5}\\\\\Rightarrow \dfrac{12}{5}\ km^2[/tex]