Use C++ programmingGiven three numbers, create a class Area with following characteristics. Must extend Rectangle and Square class. Public function named getSumOfAreas that accept two parameter of double type and return addition of those number. Note: Rectangle and Square class already created. Input 5.5 5.5 6.5Where, The first line is length of Rectangle. The second line is width of Rectangle. The third line is side of Square. Output 30.25 42.25 72.50Where, The first line of output contains area of Rectangle. The second line of output contains area of Square. The third line of output contains sum of above area. Assume that, Inputs are in double within the range [ 1 to 10^20].