A landscaper needs to mix oil with gasoline to run a hedge trimmer. How much oil needs to be added to 2 gallons of gasoline to make a solution that is 2.5% oil? Round to the nearest hundredth.

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