International UBC

Regional Council

Carpenter's 408

Formula's & Tables

Apprenticeship

DIAMETER = C * .31831

[ Circumference times .31831 ]

CIRCUMFERENCE = Pi * d

Pi times Diameter

( Pi = 3.1416 )

AREA OF A CIRCLE = Pi * r ²

Radius squared ( radius X radius )
times Pi

VOLUME OF A CYLINDER = Pi * r ² * h

Pi times radius squared ( radius X radius )
times height

To find the Hypotenuse of a triangle you use the
Pythagorean Theory which is a ² * b ² = c ²

( a * a ) + ( b * b ) = ( c * c )

a = Height
b = Base
c = Hypotenuse


The Pythagorean Theory can be used in odd triangle such as the one to the left. Just make 90 ^o angle from base to the intersecting lines at top of triangle and use the
a ² * b ² = c ²

This can be changed around to find a missing side measurement when the other 2 sides are known

AREA OF A TRIANGLE = 1/2b * h


1/2 Base times Height

AREA OF A SQUARE = S * S


Side times Side

AREA OF A RECTANGLE =
Length times Width

AREA OF A PARELLELOGRAM =
Base times Height

AREA OF A TRAPEZOID =
1/2 times ( base 1 + base 2 ) times Height

VOLUME OF A CUBE =
Length times Width times Height

( width or depth )