samihazem2004oxvbbn samihazem2004oxvbbn

01-06-2020
Mathematics

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Anyone know the answer please

Anyone know the answer please class=

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TheLazyNobita TheLazyNobita

01-06-2020

Answer:

As radius is perpendicular to tanget ,

BC is perpendicular to AB

By pythagoras theorem:

x² = (9 + x)² - 15²

x² = 81 + 18x + x² - 225

18x = 225 - 18

x = 207/18 = 11.5

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