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

7.G.B.6

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.

So,

Base area = 50 units.

Base perimeter = 30 units.

Length of Prism = 7 units.

Step 2: Convert the units into the same measurement, if required.

Step 3: Use the Surface area formula for a triangular prism.

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

(30 * 7 ) + 2 *50 = 210 + 100

210 + 100 = 310 square units.

Why should you use a Surface Area of Triangular Prism Worksheet for your students?

Solving this worksheet will help your students to understand different concepts such as length, perimeter, and base area.

Download Equations with Surface Area of a Triangular Prism Worksheets PDF

You can download and print these super fun equations with the surface area of a triangular prism worksheet pdf form here for your students. You can also try Surface Area Of Triangular Prism Problems for a better understanding of the concepts.

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