text: help me slove this? 4.find the perimeter of this solid.  (area of rectangle = length × width   the sides are 2x,2 3x, 3x p = 9x and a = 11x2   b. p = 13x and a = 12x2   c. p = 14x and a = 11x2   d. none of these if the sides of a rectangle are 2x and 3x, then the perimeter is 2(2x + 3x) = 10x.  the area is 2x * 3x = 6x².  p = 10x a = 6x²  d) none of the above.