Formulas
Area of a circle
pi r squared
Expand 5x(3x - 4)
15x2 - 20x
Interior angles of a polygon
(number of sides - 2) x 180
(x + 4)(x - 9)
x2 - 5x - 36
Pythagoras Theorem
a2 + b2 = c2
Volume of a prism
Area of cross section x length
area of a trapezium
1/2(a + b)h