Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book page 329

5. Now solve for for a given area with various number of sides. Enter
B
the distance , move the cursor onto
B
6. Enter . To find the distance
N=8
for , and then for
B N=9
Find the area given
B=6
area of a circle with radius 6), which is approximately 113.097.
7. Enter . To find the area
B=6
, then , then
N=10 N=100
the area approaches p
A
Now graph the equation to see visually how the area changes as the number of sides gets large.
8. Press z. Select the default mode settings.
, and then press ƒ \.
B
, move the cursor onto
B
.
N=10
, and , , ,
N=10 100 150 1000
, move the cursor onto
A
, then
N=150 N=1000
2
.
B
, and then press ƒ \. Find
B
, and . Compare your results with p6
10000
, and then press ƒ \. Find
A
, and finally . Notice that as
N=10000
Chapter 17: Activities
and . To find
A=200 N=6
2
(the
for
A
gets large,
N
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