The ratio of the measures of the sides of a triangle is 9: 7: 3 if the perimeter of the triangle is 266 inches, find the length of the shortest side

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