Answer: The ratios of the area would be 3.5 times larger.
If you compare the ratios of the sides, you will find that they increase by 1.75 times.
28 / 16 = 1.75
Now, lets write an equation to see what change that would make on the area, if the sides increase by 1.75.
LW = A
1.74L x 1.75W = 3.5A
We have to multiply the 1.75 by 1.75 to find the change in area, which is 3.5.