May 20, 2009 · The formula for the area of a right prism is: Total surface area = area of one square + area of four triangles which equals = length2 + 4 ( 1/2 * base * height) The volume of a right prism is ... Rectangular prism - a box-shaped object. Right rectangular prism is a 3-dimensional solid which has six rectangular faces. Rectangular prism can also be oblique - leaning to one side - but then the side faces are parallelograms. Right rectangular prism is also called cuboid, box or rectangular hexahedron. Apr 28, 2013 · For each shape we then work through a Prism with number values on it, and write the working out of areas directly onto the flat Net. They then add up all these areas on the Net to get the Total Surface Area. Later we move on from using nets of Rectangular Prisms and Cylinders, to simply using the mathematical formulas for the TSA of these shapes. Volume of a triangular prism formula. The volume formula for a triangular prism is (height x base x length) / 2, as seen in the figure below:. So, you need to know just three lengths: height, base, and length, in order to calculate the volume. To find the volume of a regular hexagonal prism, we can use the formula V = 3ash, where a = apothem length, s = length of a side of the base, and h = height of the prism. These definitions and ... The formula for the area of the base will depend on the shape of the base. An example is the right triangular prism. To find its area, you multiply the base of the triangle times the height and divide that by 2. Then, multiply the area times the length, or the depth, of the prism to find the volume. The formula for the volume of a cuboid is l × w × h = lwh, where l is the length, w is the width and h is the height of the rectangular prism. This video will give two examples of finding the volume of a rectangular prism. Examples: 1. Find the volume of a rectangular prism with sides 25 feet, 10 feet and 14 feet.