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Perimeter of a Sector of a Circle
P = l + 2r
Where: P = Perimeter, l = l, r = radius
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, r = 5
Find: P (Perimeter)
- Formula: P = l + 2·r
- Substitute the values: P = 2·5 + 7
- Result: P = 17
Answer: P = 17
Calculator
How to calculate Perimeter of a Sector of a Circle
- Write down the formula: P = l + 2r.
- Note the known values (l, r).
- 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 a Sector of a Circle?
The formula is P = l + 2r, where P = Perimeter, l = l, r = radius.
What is Perimeter of a Sector of a Circle when l = 7, r = 5?
P = 17. Substitute the values into P = l + 2r and simplify.