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vekshin1
3 years ago
8

Need help with this geometry poblem

Mathematics
1 answer:
Kruka [31]3 years ago
3 0

Answer:

17.5

Step-by-step explanation:

Because the lines of the trapezoid are parallel that means that side ratios are similar mainly: BC/AB = DE/EF

Which yields: DE = CB * EF/ AB = 18.5 * 8.5 / 9 ~ 17.5

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