SOLUTION: Speed of the car is 47.52 km / hr. A lorry wheel is rotating at 400 RPM. What is the radius (in cm) of a lorry wheel if the lorry has a same speed with car?

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Question 930554: Speed of the car is 47.52 km / hr. A lorry wheel is rotating at 400 RPM. What is the radius (in cm) of a lorry wheel if the lorry has a same speed with car?
Answer by lwsshak3(11628) About Me  (Show Source):
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Speed of the car is 47.52 km / hr. A lorry wheel is rotating at 400 RPM. What is the radius (in cm) of a lorry wheel if the lorry has a same speed with car?
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r=radius(cm)

%28400%2A2%28pi%29r%2860%29%29%2F%2810%5E5%29=47.52
r=%2810%5E5%2A47.52%29%2F%28400%2A2%28pi%29%2860%29%29=31.51+%28cm%29