Solve for Surface Area of Triangular Prism Worksheet

8 problems

A triangular prism is a type of prism that has 6 vertices, 9 edges, and 5 faces. The total surface area of a triangular prism is the sum of all the areas of the faces of the prism. A triangular prism consists of two triangular faces and three rectangular faces. Lateral faces are rectangular ones and bases are triangular faces. 

Grade 7
Surface Area And Volume

Teaching Surface Area of a Triangular Prism Easily 


  • Firstly, find the area of the base and top triangles using the area of triangle formula. 


  • Then, find the lateral surface area. Multiply the length of the prism by the perimeter. 


  • Lastly, add all the areas together to get an appropriate result. 


Here is an example to solve a question on the surface area of a triangular prism. Let’s look at the given example mentioned below to understand more about the concept of the surface area of a triangular prism. 


                 (Perimeter of the base × Length of the prism ) + (2 × Base Area)





Q. Find the total surface area of a triangular prism which has a base area of 50 units, a base perimeter of 30 units, and the length of the prism is 7 units. 

Step 1: Write down all the units given.&n...

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