Surface area of a rectangular prism formulaįinding surface area for all rectangular prisms (including cubes) involves both addition and multiplication. B usually refers to the area of the base of a 3-dimensional figure. The surface area of a rectangular prism is the total area of all six faces. When you have a cube, finding the area of one face allows you to find the total surface area of the solid very quickly, since it will be six times the area of one face.įinding the surface area of all rectangular prisms allows you to also find the surface area of any cube, since a cube is a type of rectangular prism. In geometric formulas, b usually refers to the length of the base of a 2-dimensional figure. The formula volume equals the area of the base by multiplying with the height. What is the surface area of a rectangular prism? Example 1: Compute the surface area of a rectangular prism with a. Opposite faces are congruent.Ī special type of rectangular prism is a cube, in which all six faces are congruent. All six faces meet at right angles to one another.
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