Aspiral staircase turns 270° as it rises 10 feet. the radius of the staircase is 7/pi feet. what is the length of the handrail? write answer as an improper fraction.

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