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Ahat [919]
2 years ago
7

Please help asap pleaseeeew

Mathematics
1 answer:
wel2 years ago
3 0

Answer:

6.

Step-by-step explanation:

1) OA=d/2=20/2=10;

2) AB=AC/2=16/2=8;

3) \ OB=\sqrt{OA^2-AB^2} =6.

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