Equations/Conversions

To Convert From:To:Mulitply by
inchmeter (m).0254
inchmillimeter (mm)25.4
ounce masskilogram (kg).0283
ounce forcenewton (N).278
pound masskilograms (kg).4536
pound forcenewton (N)4.4482
pound force/inchnewton/millimeter (N/mm).1751
pound force/inch2 (psi)megapascal (MPa).006895
pound force inchnewton-millimeter (N/mm)112.9848
pound force footnewton-meter (N/m)1.3558
kilogram forcenewton (N)9.8066
degree (angle)radian (rad).01745
minute (angle)radian (rad).0002908
degree Fdegree celius (C)(F-32)/1.8

Circumference of a circle-

multiply diameter by 3.1416

Diameter of a circle-

multiply circumference by .31831

Area of a rectangle-

multiply length by breadth

Area of a triangle-

multily base by 1/2 perpendicular height

Area of an elipse-

multiply product of both diameters by .7854

Area of a parallelogram-

multiply base by altitude

Side of an inscribed square-

multiply diameter by 0.7071 or multiply circumference by 0.2251 or divide

circumference by 4.4428

Side of an Inscribed cube-

mulitply radius of sphere by 1.1547

Side of an equal square-

multiply diameter by .8862

Surface of a sphere-

square the diameter and multiply by 3.1416

Volume of a sphere-

cube the diameter and multiply by .5236

*The side of a square multiplied by 1.4142 equals diameter of its circmscribing circle

*The side of a square multiplied by 4.443 equals circumference of its circumscribing circle

*The side of a square multiplied by 1.128 equals diameter of an equal circle

*The side of a square multiplied by 3.547 equals circulference of an equal circle

**To find the gallon capacity of tanks (given the dimensions of a cylinder is in inches):

square the diameter of the cylinder, multiply by the length and by .0034.

Rules for Figuring Tapers

GIVENTO FINDRULE
The taper per footThe taper per inchDivide the taper per foot by 12
The taper per inchThe taper per footMultiply the taper per inch by 12
End diameters and lenght of taper in inchesThe taper per footSubtract small diameter from large;divide by length of taper, and multiply quotient by 12
Large diameter and lenght of taper in inches, and taper per footDiameter at small end in inchesDivide taper per foot by 12; multply by length of taper, and subtract result from large diameter
Small diameter and length of taper in inches, and taper per footDiameter at large end in inchesDivide taper per foot by 12; multiply by length of taper, and add result to small diameter
The taper per foot and two diameters in inchesDistance between two given diameters in inchesSubtract small diameter from large; divide remainder by taper per foot, and multily quotient by 12
The taper per footAmount of taper in a certain length given in inchesDivide taper per foot by 12; multiply by given length of tapered part

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