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Equilateral triangle area of a Triangle
A = (√3 / 4) a²
Where: A = Equilateral triangle area, a = a
Use the same units for all lengths (e.g. all in cm); areas come out in cm², volumes in cm³.
Solved example
Given: a = 7
Find: A (Equilateral triangle area)
- Formula: A = √(3)·a²/4
- Substitute the values: A = √(3)·7²/4
- Result: A = 21.217622
Answer: A = 21.217622
Calculator
How to calculate Equilateral triangle area of a Triangle
- Write down the formula: A = (√3 / 4) a².
- Note the known values (a).
- Substitute them and simplify to find A.
- Use the calculator above to solve for any letter.
Frequently asked questions
What is the formula for Equilateral triangle area of a Triangle?
The formula is A = (√3 / 4) a², where A = Equilateral triangle area, a = a.
What is Equilateral triangle area of a Triangle when a = 7?
A = 21.217622. Substitute the values into A = (√3 / 4) a² and simplify.