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22-12-2019
Mathematics

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What is the length of EC (click for picture)

What is the length of EC click for picture class=

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22-12-2019

Answer:

2 √130 km

Step-by-step explanation:

18 /45 = BC / (BC + 21)

45 BC = 18 BC + 378

27 BC = 378

BC = 14

CE = √18² + 14² = √520 = 2 √130

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