Given: ag and ci are common internal tangents of h and b. hg = 7, ed = 7, and ed = ef. what is the measure of ec?

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