# Surface Area of a Triangular Prism - Lateral Area, Geometry | Summary and Q&A

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January 2, 2018
by
The Organic Chemistry Tutor
Surface Area of a Triangular Prism - Lateral Area, Geometry

## TL;DR

Learn how to calculate the lateral area and total surface area of a triangular prism using the perimeter of the base and the height.

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### Q: How do you calculate the lateral area of a triangular prism?

To find the lateral area, multiply the perimeter of the base by the height of the prism. The perimeter is calculated by adding the lengths of all the sides of the base.

### Q: How is the total surface area of a triangular prism calculated?

The total surface area is obtained by adding the lateral area to the area of the triangular base. The area of the base is found using the formula: (1/2) base * height of the triangle.

### Q: Can you calculate the lateral area and total surface area of a triangular prism with specific measurements?

Yes, by knowing the lengths and heights of the prism's base and triangle, you can calculate both the lateral area and the total surface area using the formulas provided.

### Q: What is Heron's formula used for in calculating surface area?

Heron's formula is used to find the area of a triangle when all three sides are known. It involves calculating the semi-perimeter (s) and then plugging the values into the formula: A = sqrt(s(s-a)(s-b)(s-c)).

## Summary & Key Takeaways

• Triangular prisms have two main components for calculating surface area: the lateral area and the total area.

• The lateral area is found by multiplying the perimeter of the base by the height of the prism.

• The total surface area is the sum of the lateral area and the area of the base, which is calculated using the formula for the area of a triangle.