22
Pi
g
À 3.141592653590 for calculations.
À 3.141592654 for display.
Example
Note: Classic mode displays calculations with À as a decimal
approximation.
³ Problem
What is the area of a circle if the radius is 12 cm?
Reminder: A = Àr
2
.
The area of the circle is 144 À square cm. The area of the
circle is approximately 452.4 square cm when rounded to one
decimal place.
6 %c 64 <
D 2 T 6 E %a <
À 2 V g <
r
g V 12 G 2 <
r
≈
≈
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