- D28
Solution:
Concept- We have a rectangle, and the graphic also shows the rectangle's measurements. We must apply the formula
, where l is the rectangle's length and b is its width, to get the area of the rectangle.
As a result, we may depict the resulting rectangle as in the image above.Therefore, it is evident that the rectangle's width is equal to 4 meters and its length is equal to 7 meters.
We are aware that if a rectangle's length and width are both equal to l and b, then the area of the rectangle is equal to the sum of l and b.Assume that A is the same as the rectangle's area.
When we replace equations (1) and (2) in equation (3) , we obtain
Hence, the correct option is 4) 28 
