Casio fx-9750G PLUS - Manual (Page 381)

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20-2 Programming Examples
Example 1 To calculate the surface area and volume of three regular
octahedrons of the dimensions shown in the table below
Store the calculation formula under the file name OCTA.
A
Length of One Side (A) Surface Area (S) Volume (V)
7 cm cm 2 cm 3
10 cm cm 2 cm 3
15 cm cm 2 cm 3
The following are the formulas used for calculating surface area S and volume V
of a regular octahedron for which the length of one side is known.
2
S = 2 3 A 2 , V = –––– A 3
3
When inputting a new formula, you first register the file name and then input the
actual program.
u u u u u
To register a file name
Example To register the file name OCTA
• Note that a file name can be up to eight characters long.
1. Display the program list menu and press 3 (NEW) to display a menu, which
contains the following items.
• { RUN}/{BASE} ... {general calculation}/{number base} program input
P.360 • {Q Q Q Q Q } ... {password registration}
• { SYBL} ... {symbol menu}
2. Input the name of the file.
OCTA
• The cursor changes form to indicate alpha character input.
• The following are the characters you can use in a file name:
A through Z, r , θ, spaces, [, ], {, }, ’, ”, ~, 0 through 9, ., +, –, Ч, ч
• Note, however, that v and . cannot be input for the name of a program
that contains binary, octal, decimal, or hexadecimal calculations.