Explanation:
Given that,
Mr. Hershman has purchased a farm that is in the shape of a rectangle. The dimensions of the piece of land are 4.3 km by 4.85 km. The area of the rectangle is given by :
[tex]A=l\times b[/tex]
[tex]A=4.3\times 4.85[/tex]
[tex]A=20.855\ km^2[/tex]
So, she must buy [tex]20.855\ km^2[/tex] of area.
Since, [tex]1\ km^2=100\ hectares[/tex]
So, the area of rectangle is 2085.5 hectares. Hence, this is the required solution.