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Program: REGPOLY
REGPOLY
- Computes the area of a regular polygon, given the number of sides and either the radius, apothem, side length, or perimeter.
Useful for:
- SAT
- ACT
- Geometry
- Precalculus
- Trigonometry
- Calculus
Example
Q: Find the area of the regular octagon:
Solution:
Run REGPOLY. How?
Enter N = 8. This is
the number of sides.
Choose 2 for 'Given
info'. We are given
the apothem - the
distance from the
center to a side, at
a right angle.
Enter A = 4 for the
length of the apothem.
The program reports:
Interpretation:
The area is about
53 square units.
