emajovanovic emajovanovic

23-02-2017
Mathematics

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A rectangular peace of paper, 10cm by 25cm, is folded so that a pair of diagonally opposite corners coincide. Find the length of the crease.

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Deathcamo Deathcamo

23-02-2017

a²+b²=c²
10²+25²=c²
100+625=c²
725=c²
26.9258240357=c

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