← The Pool Deck Is a Maths Room · Lesson 3 of 4
Yards and metres
Most American winter pools are 25 yards long; most of the world, and every Olympics, uses metres. A yard is 0.9144 of a metre, so a 50 in a yards pool is about 45.7 metres of swimming.
That is why a yards time is quicker than the same swim in metres, and why conversion charts are only averages: turns, pool depth and the swimmer all change the true gap. Compare a time with another from the same kind of pool.
A length of each pool
The same swimmer races a 100 in a 25-yard pool and a 100 in a 25-metre pool. How much longer is the metres race?
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