Sector perimeter
Solve sector perimeter with your values and follow each calculation step.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
P = 2r + (θ/360)2πr
Variables & units
- Radius
- cm · minimum 0, maximum 1000000
- Sector angle
- ° · minimum 0.000001, maximum 359.999999
Worked example
A quarter-sector of radius 7 cm has perimeter 14 + 3.5π cm.
Assumptions
Both radii form part of the boundary. Use a sector angle strictly between 0° and 360°.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
Use the default input values to find the answer. The reset icon restores those values.
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