Let us understand this using the following steps: The only difference is that in a right triangular prism the 3rd side of the base becomes the height of the prism since it forms a right-angled triangle. The surface area of a right triangular prism can be calculated in the same way as we calculate the surface area of a triangular prism. How to find the Surface Area of a Right Triangular Prism? The formula that is used to calculate the surface area of a triangular prism is, Surface area = (Perimeter of the base × Length of the prism) + (2 × Base Area) = (S 1 + S 2+ S 3)L + bh where 'b' is the bottom edge of the base triangle, 'h' is the height of the base triangle, L is the length of the prism and S 1, S 2 and S 3 are the edges of the base triangle. What is the Formula for the Surface Area of Triangular Prism? The rectangular faces are said to be the lateral faces, while the triangular faces are called bases. A triangular prism has three rectangular faces and two triangular faces. The surface area of a triangular prism is defined as the sum of the areas of all the faces or surfaces of the prism. Our expert tutors conduct 2 or more live classes per week, at a pace that matches the child's learning needs.įAQs on Surface Area of Triangular Prism What is the Surface Area of Triangular Prism? Our mission is to transform the way children learn math, to help them excel in school and competitive exams. Lateral Area of a Right Triangular PrismĬuemath is one of the world's leading math learning platforms that offers LIVE 1-to-1 online math classes for grades K-12.Thus, the surface area of the right triangular prism is 400 square units. Thus, the surface area of the right triangular prism, Surface Area = (Perimeter of the base × Length of the prism ) + (2 × Base Area) Solution: Given, base area = 60 square units, base perimeter = 40 units and length of prism = 7 units This means, total surface area of a right triangular prism = (S 1 + S 2 + h) × l + bhĮxample: Find the total surface area of a right triangular prism which has a base area of 60 square units, the base perimeter of 40 units, and the length of the prism is 7 units. Step 3: Add all the areas together to get the total surface area of a right triangular prism in square units.Step 2: Find the product of the length of the prism and the perimeter of the base triangle which will give the lateral surface area = (S 1 + S 2 + h) × l.
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