A garden designer designed a square decorative pool. The pool is surrounded by a walkway. On two opposite sides of the pool, the walkway is 8 feet. On the other two opposite sides, the walkway is 10 feet. The final design for the pool and walkway covers a total area of 1,440 square feet. The side length of the square pool is x. Write an expression that represents:
A) The total length of the rectangle (including the pool and walkway).
B) The total width of the rectangle (including the pool and walkway).
C) The total area of the pool and walkway.
D) What does a solution to the equation (your total area) = 1,440 mean in this situation?