Circle & Arc Calculator
Solve Radius, Area, Circumference & SectorsCircle & Sector Results
Total Circle Area
A = 78.54 u²
Circumference: 31.42 u
Arc Length (s):5.24 u
Sector Area:13.09 u²
Chord Length (c):5.00 u
Segment Area:2.26 u²
Frequently Asked Questions
• Diameter (d) =
• Circumference (C) =
• Area (A) =
• Arc Length (s) =
• Sector Area =
2 × r• Circumference (C) =
2 × π × r = π × d• Area (A) =
π × r²• Arc Length (s) =
( θ / 360° ) × 2πr• Sector Area =
( θ / 360° ) × πr²
• Chord Length (c) =
• Segment Area =
2r × sin(θ / 2)• Segment Area =
Sector Area − Triangle Area = (1/2)r²(θrad − sin(θ)).