<h2>Answer:The first thing you need to do is multiply the length by the width by the height. That gives the number of cubic millimetres. To calculate the number of litres, you then divide that number by a million. As an example, let's take a box measuring 406 x 356 x 203mm.</h2><h2 /><h2>Explanation:</h2><h2>In math, volume is the amount of space in a certain 3D object. For instance, a fish tank has 3 feet in length, 1 foot in width and two feet in height. To find the volume, you multiply length times width times height, which is 3x1x2, which equals six.</h2>
