Answer choices:
a. about 80 fewer
b. about 140 fewer
c. about 80 more
d. about 140 more

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm