Casio fx-570ES - Basic Calculations (COMP Mode); Performing Arithmetic Calculations; Setting Decimal Places and Significant Digits

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Casio FX-570ES One Page Exercise:
CALC FUNCTION
>>> Find the surface areas of a cylindrical can using xhxy π+π= 22
2
, when
(
)
h,x =
(
)
123, and
(
)
21053 .,. , where
x
, h are respectively the radius and height of the can.
What To Do The Screen Display
Turn on the calculator, set calculator to “COMP” mode and set up to MathIO.
W w 1 q w 1
We use variables X and Y for x and y, and the variable A for h. First we enter the expression.
Q n Q r 2 q KL Q )
d + 2 q KL Q ) Q z
Now we enter the first pair of values given, i.e. (3, 12).
r
3 p 1 2 p
Next we enter the second pair of values given, i.e. (3.5, 10.2).
r 3 . 5 p
1 0 . 2 p