# Geometry

A speed skating track has a perimeter of 400m. Determine the straightaway length of the track.
* the width of the track is 50m*

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1. by width, I assume you mean the distance between the parallel straight sides. If so, then the track consists of two straightaways of length L, and a complete circle of diameter 50. So,
2L + 50π = 400

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2. 2L+2W = 400.
2L + 2*50 = 400
L =

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