THEBEASTMONSTER5506 THEBEASTMONSTER5506

02-03-2020
Mathematics

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What is the length of AB?

15
9
4.5
18

What is the length of AB 15 9 45 18 class=

Respuesta :

ahmedilahm614 ahmedilahm614

02-03-2020

Answer:

4.5

Step-by-step explanation:

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amna04352 amna04352

02-03-2020

Answer:

18

Step-by-step explanation:

Let X be the midpoint of the chord AB

Distance between X and the centre:

15-3 = 12

XB² = 15² - 12²

XB² = 81

XB = 9

AB = 2XB = 18

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