Pre-Algebra Formulas

• Area of a Triangle

  A=1/2bh
• PI r^2
• b

  base
• B

  Area of the base
• slope-intercept form

  y=mx+b
• Slope from 2 points formula

  m=y2-y1/x2-x1
• Pythagorean Theorem

  a^2+b^2=c^2
• square root

  inverse of x^2
• Circumference of a circle

  2pi or pid
• Volume of cube/box

  length x width x height
• Area of a square

  base x height
• surface area

  find area of each side and add them together