Computing areas of regular n-sided polygons, Problem, Procedure – Texas Instruments TI-83 PLUS User Manual

Page 591

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TI-83 Plus

Activities

588

Computing Areas of Regular N-Sided
Polygons

Problem

Use the equation solver to store a formula for the area of a regular
N-sided polygon, and then solve for each variable, given the other
variables. Explore the fact that the limiting case is the area of a circle,

p

r

2

.

Consider the formula A = NB

2

sin(

N) cos(

N) for the area of a

regular polygon with N sides of equal length and B distance from the
center to a vertex.

N = 4 sides

N = 8 sides

N = 12 sides

Procedure

1. Press



0

to select

0:Solver

from the

MATH

menu. Either the

equation editor or the interactive solver editor is displayed. If the

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