A 60 minute television program consists of 6 commercials, each 2.5 minutes long, and four equal length entertainment segments. How long is each entertainment segment?

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