Math & statistics

Equations, geometry, percentages, statistics and significant figures.

a²b²c² π r² sin x
x = (−b ± √(b² − 4ac))/2aQuadratic Equation Solvera² + b² = c²Pythagorean Theorem CalculatorA = π · r²Circle Area & Circumference CalculatorV = ⁴⁄₃ · π · r³Sphere Volume Calculatorp = part/whole · 100 %Percentage Calculatorδ = (|xmeasured − xtrue|)/|xtrue| · 100 %Percent Error Calculators = √(Σ(xi − x̄)²)/(n − 1)Standard Deviation & Statistics Calculator0.00450 → 3Significant Figures Calculator