Question

a farmer has a 2040 ft of fencing and wishes to fence off two separate fields. one of the fields is to be a rectangle with the length twise as long os the width. while the other field is to be square. determine the dimension of the fields if the farmer wishes to maximize the total area of the two fields.
the diagram has a rectangle with the width=4 and the length=2x
the total perimeters =2040.