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Lateral surface area of a Triangular Prism
LSA = (a + b + c) × L
Where: L = length of the prism, LSA = Lateral surface area, a = a, b = base of the triangle, c = c
Use the same units for all lengths (e.g. all in cm); areas come out in cm², volumes in cm³.
Solved example
Given: L = 7, a = 5, b = 10, c = 4
Find: LSA_ (Lateral surface area)
- Formula: LSA = L·(a + b + c)
- Substitute the values: LSA = 7·(10 + 4 + 5)
- Result: LSA = 133
Answer: LSA_ = 133
Calculator
How to calculate Lateral surface area of a Triangular Prism
- Write down the formula: LSA = (a + b + c) × L.
- Note the known values (L, a, b, c).
- Substitute them and simplify to find LSA_.
- Use the calculator above to solve for any letter.
Frequently asked questions
What is the formula for Lateral surface area of a Triangular Prism?
The formula is LSA = (a + b + c) × L, where L = length of the prism, LSA = Lateral surface area, a = a, b = base of the triangle, c = c.
What is Lateral surface area of a Triangular Prism when L = 7, a = 5, b = 10, c = 4?
LSA_ = 133. Substitute the values into LSA = (a + b + c) × L and simplify.