Volume of a sphere
4/3πr^3
Surface area of a sphere
4πr^2
Volume of a cone
1/3πr^2h
Curved surface area of a cone
πrl
Volume of a pyramid
(area of the base x perpendicular height) / 3
Sine Rule
a/SinA = b/SinB = c/SinC
Cosine Rule
a^2 = b^2 + c^2 -2bcCosA
Area of a triangle
1/2abSinC
Quadratic Equation
X = - b plus minus square root of b to the power 2 - 4 a c over 2 a
Pythagoras
a^2+b^2=c^2
compound interest
P(1+r/100)^n