Formulas Flashcards
Probability
= number of acceptable outcomes / number of possible outcomes
Percent increase (or decrease)
= (new amount - original amount) / original amount
Area of a square / rectangle / parallelogram
A = lw
Area of a triangle
A = (1/2)bh
Area of a rhombus / kite
A = (1/2)ab
a & b = length of diagonals
How to determine each interior angle of a polygon.
((n-2)180) / n
Where n is number of sides
Area for a regular polygon
A = (1/2) ap
Where a is the apothems length and p is the perimeter
Volume of a prism
V = Bh
Circumference of a circle
C = 2πr or πd
Surface area for exterior face of a cylinder
A = 2πrh
Surface area of a circle
A = πr^2
Surface area of a cylinder
SA = (2πr^2)) + (2πrh)
Volume of a cylinder
V = πr^2h
Volume of a pyramid / cone
V = (1/3)Bh
Surface area of a cone
SA = πr^2 + πrs
