Find the area of the regular polygon with the given information.

Make sure to draw the reference triangle and be careful with rounding!

1.  A nonagon with side lengths of 24 cm.

2.  A dodecagon with a perimeter of 144 cm.

3.  A 21-gon with side lengths of 10 in.

4.  A hexagon with a perimeter of 42 ft.

5.  A quadrilateral with side lengths of 50 ft.