Add the results from step 3 and. Work out the surface area of the triangular prism. Surface Area Of A Triangular Prism Shapes Worksheet Kindergarten 8th Grade Math Worksheets Triangular Prism Substitute the given values of base height and length in the formula. . It also explains how to calculate the. Height is calculated from known volume or lateral surface area. Surface area calculations include top bottom lateral sides and total surface area. In a triangular prism we have two equal triangular faces and three rectangular faces that may or may not be the same. Each triangular face has an area of 1 2 a b where a is the length of the height of the. EqA b_1 b_2 b_3l eq. A bh 3bl. The value of the surface area of the prism is obtained and the unit of the surface area of the prism is placed in the end in terms of square units. Units are shown for convenience but do not affect calculations. Fin