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Please help me quickly

Please help me quickly-example-1

1 Answer

6 votes

Answer:

AB = 13.964 cm

Explanation:

BF² = 6² + 13²

BF² = 36 + 169

BF² = 205

AB² = AF² - BF²

AB² = 20² - 205

AB² = 400 - 205 = 195

AB = 13.964 cm

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