Geometry is the study of how to use math to describe and investigate different points, lines and shapes. The way that a shape is described in geometry is with a formula, which is simply a mathematical way to calculate different properties of a shape like size, area or volume. Volume is a unique property of three-dimensional shapes because three-dimensional shapes take up space in three different directions. In this experiment, you will see which formula is the most accurate for estimating the volume of an M&M candy.