Most wire or string is made with a circular cross section of some particular radius and diameter. The area of that cross section is the well known A = pi*R² which is colloquially pronounced as “pie ...

The volume of a cylinder is the area of the cross-section multiplied by the height. D button is used to convert a value in terms of π to a decimal value. To calculate the surface area of a cylinder: ...

When installing conductors of different sizes (or types of insulation) in a raceway, you can’t size the raceway based on Tables 1 through 12 in Annex C. You must instead follow this three-step process ...