हिन्दी में पढ़ेंHome › Formulas › Equilateral Triangle › Perimeter
Perimeter of an Equilateral Triangle
P = 3a
Where: P = Perimeter, a = side
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: P (Perimeter)
- Formula: P = 3·a
- Substitute the values: P = 3·7
- Result: P = 21
Answer: P = 21
Calculator
How to calculate Perimeter of an Equilateral Triangle
- Write down the formula: P = 3a.
- Note the known values (a).
- Substitute them and simplify to find P.
- Use the calculator above to solve for any letter.
Frequently asked questions
What is the formula for Perimeter of an Equilateral Triangle?
The formula is P = 3a, where P = Perimeter, a = side.
What is Perimeter of an Equilateral Triangle when a = 7?
P = 21. Substitute the values into P = 3a and simplify.