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📐 Formulas ✕
Mathematics
Circle Area
A = πr²
Rectangle Perimeter
P = 2(l + w)
Pythagorean Theorem
a² + b² = c²
Quadratic Formula
x = (-b ± √(b²-4ac)) / 2a
Sphere Volume
V = (4/3)πr³
Trig Identity
sin²θ + cos²θ = 1
Triangle Area
A = (1/2) × b × h
Science
Newton's 2nd Law
F = ma
Pressure
P = F / A
Kinetic Energy
KE = (1/2)mv²
Velocity
v = u + at
Mass-Energy
E = mc²
Wave Equation
λ = v / f
Electric Power
P = V × I
Commerce
Simple Interest
SI = (P × R × T) / 100
Compound Interest
A = P(1 + r/n)^(nt)
Profit %
Profit% = (Profit/CP) × 100