Texas Instruments TI-15 Teachers Manual page 92

Using pi to find circumference
Use this formula to
find the amount of
border you need to
buy if you want to put
a circular border
around a tree at a
distance of 3 meters
from the tree.
C = 2pr = 2 x p x 3
P r e s s
2 V ©
V 3 ®
Ÿ
© 2000 T I
EXAS NSTRUMENTS
D i s p l a y
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TI-15: A Guide for Teachers
Pi
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