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| Home | Architects | Engineers | Contractors | Suppliers | Advertise |
| Building Designers | Manufacturers | ||||
| Please tell each Firm you contact that you found them on Tnjresource Construction Directory. | |||||
| Common
Formulas Capacities or Volumes / Conversion Factors Cooking Measurement Equivalents / Temperature / Weight U.S. and Metric Equivalents |
| Abbreviations: |
or pi = 3.1416 |
| r = radius |
| h = height |
| d = diameter. |
| CIRCUMFERENCE | |
| Circle: | C =
d, |
| AREA | |
| Triangle: | A = (ab)/2 , in which a is the base and b the height. |
| Square: | A = a2, in which a is one of the sides. |
| Rectangle: | A = ab, in which a is the base and b the height. |
| Trapezoid: | A = (h(a + b))/2, in which h is the height, a the longer parallel side, and b the shorter. |
| Regular pentagon: | A = 1.720a2, in which a is one of the sides. |
| Regular hexagon: | A = 2.598a2, in which a is one of the sides. |
| Regular octagon: | A = 4.828a2, in which a is one of the sides. |
| Circle: | A
=
r2 |
| VOLUME | |
| Cube: | V = a3, in which a is one of the edges. |
| Rectangular prism: | V = abc, in which a is the length, b is the width, and c the depth. |
| Pyramid: | V = (Ah)/3, in which A is the area of the base and h the height. |
| Cylinder: | V
=
r2h,
in which
is
3.1416, r the radius of the base, and h the height. |
| Cone: | V
= (
r2h)/3,
in which
is
3.1416, r the radius of the base, and h the height. |
| Sphere: | V
= (4
r3)/3 |
| TEMPERATURE | |
| Degrees Fahrenheit to Degrees Celsius: | TC = 5/9 (TF – 32) |
| Degrees Celsius to Degrees Fahrenheit: | TF = 9/5 TC + 32 |
| Degrees Celsius to Kelvin: | TK = TC + 273.15 |
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