Question
A bicycle wheel whose radius is 30 cm covered a distancein 70 revolutions.how many kilometres was this distance
Answers
Reiny
One rotation = 2π(30) cm = 60π cm
so 70 rotations = 70(60π) = 4200π cm
= appr 13194.7 cm
= 131.947 m
= .131947 km
how about appr .13 km ? , you don't specify what accuracy.
so 70 rotations = 70(60π) = 4200π cm
= appr 13194.7 cm
= 131.947 m
= .131947 km
how about appr .13 km ? , you don't specify what accuracy.