# \[noob\] How to use custom classes?

**URL:** <https://forum.kirupa.com/t/noob-how-to-use-custom-classes/266884>\
**Category:** flash\
**Created:** [July 25, 2008, 4:56am UTC](https://forum.kirupa.com/t/noob-how-to-use-custom-classes/266884 "2008-07-25T04:56:23Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![REEF](https://avatars.discourse-cdn.com/v4/letter/r/ce73a5/32.png) [@REEF](https://forum.kirupa.com/u/REEF)\
**Post date:** [July 25, 2008, 4:56am UTC](https://forum.kirupa.com/t/noob-how-to-use-custom-classes/266884/1 "2008-07-25T04:56:23Z")

</div>

My document class:

```auto
package {
	import math.mathFuncs;
	import flash.display.MovieClip;
	public class project extends MovieClip {
		public function project () {
			var myArea:area = new area();
			trace(myArea(2,5));
		}
	}
}

```

My math class:

```auto
class math.mathFuncs {
	static function area(l:Number, h:Number) {
		return l*h;
	}
}

```

How would I use the area function from my master document class?