The PI function is a Math & Trigonometry Function. Learn how to use the PI function in Excel, or how to multiply by PI, using this tutorial.

You can also use pi to calculate the surface area or volume of curved solids and for more complex mathematics, including trigonometry. Many people approximate pi as 3.14, but Excel stores the ...

You can calculate Ratio in Excel by using the GCD function and the Substitute function. This article is a step-by-step guide to help you.

To calculate statistical variance in Microsoft Excel, use the built-in Excel function VAR.

Percentages aren't always easy to calculate, but one of the best tools in Excel's toolbox is calculating percentages for you. Here's how to do it.