First Line Sales
Construction Estimating Formulas & Useful Information
Formulas, equations, tables, facts, specifications and
Measure of Dimensions, Theorem ▪ Formulas, Rectangles, Squares, Triangles & Circles ▪ Board Feet Concrete Estimating ▪ Decimal and Metric Equivalents ▪ Weights, etc. ▪ Metrics ▪ Energy, Electric, Insulation ▪ Drywall Estimating, Door Handing
2. The area of a rectangle is equal to its base x height. (A = b x h).
For example: 10 x 5 = 50
For example: 5²=25
For example: 10 x 10 = 100 x 1/2 = 50
The area of a circle is equal to 1/2 the product of its radius and circumference. (A = 1/2 (r x c).
For example: radius = 5, circumference = 31.42: 5 x 31.42 = 157.1 x 1/2 = 78.55
A=π r², 3.1416(5 x 5) = 3.1416 x 25 = 78.54
A= d² x .7854
Find the circumference of a circle by multiplying the diameter x (π). Find the volume of a cylinder by multiplying the height x the area of the circle.
*π = 3.1416
Measure of Dimensions, Theorem
This information is believed to be accurate. The Polymer Roof Factory or First Line Sales will not be liable for errors and omissions. Specifications, detail, and other information should be verified by the user.