A wheel has a diameter of 21 inches. About how far does it travel if it makes 30 complete revolutions? Use 22/7 for pi
1 answer:
Circumference is the distance around the outside
therefor the circumference is the distance it travels in 1 revelotion
C=πd
d=21
c=21pi
use 22/7 for pio
c=21(22/7)
C=462/7
c=66
that's one revolution
times 30
66*30=1980in or about 165ft
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