Volume of a prism
area of cross section x h
Volume of a cylinder
π x r² x h
Volume of a pyramid
⅓ x area of base x height
Volume of a cone
⅓ x π x r² x h
Volume of a sphere
4/3 x π x r²
Surface Area of a cone
π x r x L
Surface Area of a sphere
4 x π x r²
Area of a parallelogram
base x perpendicular height
Area of a trapezium
((a+b) x h) / 2
Cosine Rule
a² = b² + c² x 2bcCos(A)
Sine Rule for finding sides
a/SinA = b/SinB = c/SinC
Sine Rule for finding angles
SinA/a = sinB/b = sinC/c
Compound Interest
A = P(1 + r/100)^n
A= Final amount
P= Original amount
R= Annual Rate as a percentage
n= Number of years
Simple Interest
A = P(1 + r x t)
A= Final Amount
P= Original Amount
r= Rate as a decimal
t= Time