Considering the area of a rectangle, it is found that the area of Bob's remaining plot of land is of 12.5 acres.
What is the area of a rectangle?
The area of a rectangle of length l and width w is given by the multiplication of these dimensions, that is:
A = lw.
In this problem, both the length and the width are divided in half, hence the proportion remaining is given by:
A = 0.5l x 0.5w = 0.25lw = 25% of the initial area.
0.25 x 50 = 12.5.
The area of Bob's remaining plot of land is of 12.5 acres.
More can be learned about the area of a rectangle at https://brainacademy.pro/question/10489198