Function parallelogramA

parallelogramA(l: number, w: number): number
Calculates the area of a parallelogram.
Parameters
- l: number
  The length
- w: number
  The width
Returns number
Example
```
// Returns 500
const area = Chalkboard.geom.parallelogramA(50, 10);
```
- Defined in Chalkboard.geom.ts:261