SOLUTION: Find the radius of a circular railroad track that will cause a train to change direction by 17.5° in a distance of 181 m. Round the answer to the whole.

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Question 1064101: Find the radius of a circular railroad track that will cause a train to change direction by 17.5° in a distance of 181 m.
Round the answer to the whole.
Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
.
The formula for the arc length is

S = r%2Aalpha.

alpha is the angle in radians.

So, alpha = 2pi%2A%2817.5%2F360%29 radians (! calculate !).

Then from the equation (*) find r: r = 181%2Falpha.

That's all.