Texas Instruments TI-84 Plus Guide Book

Chapter 17: Activities 507
3. Enter N=4 and B=6 to find the area (A) of a square with a distance (B) from center to
vertex of 6 centimeters.
4. Press } } to move the cursor onto
A, and then press ă \. The solution for
A is displayed on the interactive solver editor.
5. Now solve for
B for a given area with various number of sides. Enter A=200 and N=6.
To find the distance
B, move the cursor onto B, and then press ƒ \.
6. Enter
N=8. To find the distance B, move the cursor onto B, and then press ƒ
\. Find
B for N=9, and then for N=10.
Find the area given
B=6, and N=10, 100, 150, 1000, and 10000. Compare your results with
p6
2
(the area of a circle with radius 6), which is approximately 113.097.
7. Enter
B=6. To find the area A, move the cursor onto A, and then press ƒ \.
Find
A for N=10, then N=100, then N=150, then N=1000, and finally N=10000. Notice
that as
N gets large, the area A approaches pB
2
.

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-