Remember the abbreviations for base (b), height (h), and side (s) because they are needed for these calculations. Step 3: Now solve the equation for 'Base Area by simplifying the equations'. Step 2: Substitute the given values in the formula S (2 × Base Area) + (Base perimeter × height) where 'S' is the surface area of the prism. Surface Area 96 + 96 + 180 + 240 + 300 912 square units: The work that was done in the example above can be combined to reveal a 'formula' for the surface area of a right prism. When you switch from a pyramid to an isosceles triangular prism, you must also factor in the length (l) of the shape. Step 1: Write the given dimensions of the prism. For example, if you are starting with mm and you know r and h in mm, your calculations will result with V in mm 3 and S in mm 2.īelow are the standard formulas for surface area. The surface area of this right triangular prism is the sum of the areas of all 5 faces. The units are in place to give an indication of the order of the results such as ft, ft 2 or ft 3. Units: Note that units are shown for convenience but do not affect the calculations. Online calculator to calculate the surface area of geometric solids including a capsule, cone, frustum, cube, cylinder, hemisphere, pyramid, rectangular prism, sphere, spherical cap, and triangular prism

Triangular prism formula surface area