Solve From
Arc Angle
deg
Circle Properties
Radius
5
Diameter
10
Circumference
31.4159
Area
78.5398
Formulas
d = 2r
C = 2πr
A = πr²
Arc = (θ/360) × 2πr
Sector = (θ/360) × πr²
Arc & Sector
Arc Length
7.854
Sector Area
19.635
Was this useful?
Related Tools
Quadratic Calculator
Solve ax² + bx + c = 0 instantly. Get roots, discriminant, vertex, axis of symmetry, and a live parabola graph.
Interest Calculator
Calculate simple and compound interest on savings and investments with yearly breakdown.
Speed Distance Time Calculator
Calculate speed, distance, or time given the other two values with multiple unit conversions.
Base Calculator
Convert between binary, octal, decimal, and hex. Perform arithmetic in any base with 32-bit two's complement support.
Percentage Calculator
Calculate percentages four ways: X% of Y, what percent X is of Y, X is Y% of what, and percentage change.
Random Number Generator
Generate cryptographically random numbers with custom range, count, and duplicate controls.