Lang Stone

Basic Formulas for Area & Volume Calculations

Pi = 3.1416

    Area = length x width

    Area of a Circle = square of diameter x .7854 or Pi x Radius Squared

    Area of a Triangle = length x width divided by 2

    Area of an Ellipse = ½ length x ½ width x Pi

    Are of a Parabola = ⅔ side x height

 

Decimal Equivalents

 

INCHES

 DECIMAL

   1”

 .0833

   2”        

.1667

   3”

.25

   4”

.3333

   5”

.4167

   6”

.5

   7”

.5833

   8”

.6666

   9”

.75

  10”

.8333

  11”

.9166

  12”

1.00