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# Math for Pipefitters, Plumbers, Welders, Machinists, and Other Trades

Every day, pipefitters, plumbers, welders, machinists, and other tradesmen use mathematics on the job. Knowing how to set and solve up math problems, apply geometry and trig formulas, and compute accurate measurements are crucial skills in these professions. People who work in the trades may feel intimidated by the amount of shop math needed, however, the concepts will become second nature through practice and application.

Below is a list of math and geometry resources on Had2Know.org.

### Table of Contents:

• Angles and Trigonometry• Area and Perimeter

• Volume and Surface Area

• All About Circles

• Statistics

• Fractions, Percents, Decimals

• Powers, Logs, Roots

• Algebra Review

• Conversions & Misc.

### Angles and Trigonometry

- Printable Angles and Trig Cheat Sheet
- Degree/Radian Conversion Calculator
- How to Find the Intersection Angle of Two Circles
- Spherical Trigonometry Calculator
- Measuring Observed Angles Without a Protractor

### Area and Perimeter

- Triangle Side, Angle, & Area Calculator
- Parallelogram Calculator
- 4 Ways to Find the Area of a Triangle
- Area of a Circular Segment
- Area of an Ellipse Segment
- Area of a Regular Polygon with
*n*Sides - Calculate the Area, Perimeter, Diagonal of a Rectangle
- Area and Perimeter of an Ellipse and Circle
- Arc Length and Area of Parabolic Segment
- Perimeter and Area of a Rounded Rectangle
- Perimeter and Area of an Arch

### Volume and Surface Area

- Square Pyramid Calculator
- Surface Area and Volume of a Cone
- Surface Area and Volume of a Conical Frustum
- Surface Area and Volume of a Cylinder
- Surface Area and Volume of a Sphere
- Surface Area and Volume of a Spherical Cap
- Surface Area and Volume of a Torus
- Tetrahedral Volume & Surface Area from Edge Lengths
- Tetrahedral Volume from Vertex Coordinates
- Volume, Surface Area, Diagonal of a Rectangular Box
- Volume of a Curved Pipe
- Volume of a Rectangular Trapezoidal Trough
- Elliptical Tank Volume Calculator
- Cubic Yards of Concrete

### All About Circles

- Find the Diameter and Exact Center of a Circle
- Angle and Radius of an Arc
- Area of a Circular Segment
- Area and Circumference of a Circle
- Bolt Positions on a Bolt Circle Pattern
- Diameter of a Circular Bolt Pattern
- Hexagonal Circle Packing
- Ring of Circles Inscribed Within a Larger Circle
- Ring of Circles Surrounding a Circle

### Fractions, Percents, and Decimals

- Conversion Calculator: Percents, Decimals, Fractions
- Fraction Comparison Calculator
- Percent Change Formula and Calculator
- How to Simplify Fractions -- Calculator
- Convert Repeating Decimals to Fractions -- Calculator

### Powers, Exponents, Logarithms, and Roots

- Properties of Logarithms
- How to Calculate Doubling Time and Tripling Time
- How to Solve Exponential Equations
- How to Figure Half-Life from Two Measurements
- How to Solve Radical Equations

### Equation Solving & Algebra Review

- How to Solve Train Speed Word Problems
- How to Solve Combined Work Problems
- How to Solve Consecutive Integer Problems
- How to Solve Absolute Value Inequalities
- Cubic Equation Solver
- Quadratic Equation Solver
- How to Solve Rational Equations
- How to Write a Parabolic Equation in Vertex Form
- How to Find the Equation of a Parallel or Perpendicular Line
- How to Calculate the Intersection of Two Lines

### Conversions, Printable Graph Paper, & Misc. Math

- Celsius, Fahrenheit, Kelvin Conversion
- Days, Hours, Minutes, Seconds Conversion
- Length, Area, Volume Unit Conversion
- Solenoid Coil Wire Calculator
- Toroidal Coil Wire Calculator
- Length of a Rolled Sheet
- Thickness of a Rolled Sheet
- Find the Axes and Foci of an Ellipse
- Find the Exact Center of an Ellipse

### Statistics Calculators and Formulas

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