public int GetTotalSquareFeetOfWrappingPaperFromArray(BoxDimensions[] boxDimensions)
        {
            int total = 0;

            foreach (BoxDimensions boxDimension in boxDimensions)
            {
                total += GetTotalSquareFeetOfWrappingPaper(boxDimension.Length, boxDimension.Width, boxDimension.Height);
            }

            return total;
        }
        public int GetTotalLenghtOfRibbonFromArray(BoxDimensions[] boxDimensions)
        {
            int total = 0;

            foreach (BoxDimensions boxDimension in boxDimensions)
            {
                total += GetTotalLenghtOfRibbon(boxDimension.Length, boxDimension.Width, boxDimension.Height);
            }

            return total;
        }