Add the squares and apply square root to it.Observe the length, height, and width of a rectangular prism.Double the result to get the total surface area.Sum up the obtained three product values.Once multiply combination of any two parameters.Check the rectangular prism height, width, and length from the question.Get the detailed steps to calculate the volume, total surface area, length, diagonal, width, and height of the rectangular prism easily. Diagonal d = √(((S - 2lh) / (2l + 2h))² + l² + h²)ĭ is the rectangular prism space daigonal length.If the rectangular prism total surface area, length, height are given, then.Total Surface Area S = 2(lh + (l + h) * (V / lh)).Diagonal length d = √(l² + (V / lh)² + h²).If the rectangular prism volume, height, width are known, then.If the rectangular prism height, length, diagonal are given, then.If the surface area, width, height of a prism are given, then.If diagonal length, width, height of a rectangular prism are given, then.If volume, width, and height of a prism are known, then.If diagonal length, length, width of a rectangular prism are given, then.If the length, volume, and width of rectangular prism are given, then.If the surface area, length, and width of rectangular prism are given, then.Space Diagonal of Rectangular Prism Formula:.Surface Area of Rectangular Prism Formula:.The volume of Rectangular Prism Formula:.Go through the following sections and use them whenever required. Formulas that are helpful to find the unknown parameters of a rectangular prism by providing any three known details are mentioned here. Two basic types of the rectangular prism are right rectangular prism and oblique rectangular prism. A prism with rectangular bases faces is known as a rectangular prism.