maths formulas

• Area of a triangle


  Base x height / 2
• Area of a rectangle


  Length x width
• Area of a trapezium


  (a + b) x height / 2
• Area of a parallelogram


  Base x height
• Volume of a prism


  Area of a cross section x height
• Volume of a cylinder


  r^2 x height
• Figuring out density


  Mass / volume
• Figuring out speed


  Distance / time
• Figuring out pressure


  Force / area
• Mode


  The number that appears the most often
• Median


  Middle number (when the numbers are in order)
• Mean


  Add the numbers then divide by the total number of numbers
• Range


  Difference between biggest and smallest