Maths Formulas

Geometry

• Area of a triangle: 1/2*h*b

• Area of a rectangle: L*B

• Circumference of a circle: 2*pi*r

• Area of a circle: pi * r²

Measurements

• Volume of a cube: ( V = a^3 )

• Volume of a cylinder: ( V = \pi r^2 h )

• Surface area of a cube: ( SA = 6a^2 )

• Surface area of a cylinder: ( SA = 2\pi r(h + r) )

Statistics

• Mean: ( \bar{x} = \frac{{\sum x}}{{n}} )

• Median: Middle value when data is sorted.

• Mode: Value that occurs most frequently in a dataset.

Algebra

Cubic Identities

• (a+b)³ = a³+3a²b+3ab²+b³ or a³+b³+3ab(a+b)

• (a-b)³ = a³-3a²b+3ab²-b³ or a³-b³-3ab(a-b)

• (i) (a+b)² = a²+2ab+b²

• (ii) (a-b)² = a²-2ab+b²

• (iii) (a²-b²) = (a+b) (a-b)

• (iv) (x+a) (x+b) = x² + (a+b) x+ab