candle wax problem

First you find the area of the hexagons from the thin box so you find one and you times that by two then you find the area of the rectangles and there's six of them so you just find the area of one and times that by six and add the area of the hexagons an the area of the rectangles and you get the area for the thin box. After you find the area of the cylinder which you find area of a circle since there's two you times it by two then you find the area of the rectangle an add them so that would be the area of the circle. Then you times the whole area of the thin box by .01 to find how much it cost then you multiply the area of the second box by .02 to see how much that would cost and then find 20% of $15 an then add both of the cost of both boxes and the 20% of $15 and you get $24