2 years ago

Point Z is a point of tangency. Find the value of r

Mathematics

1 answer:

Nookie1986 [14]2 years ago

5 0

That's kind of blurry but....by the Pythagorean Theorem

(3+r)^2=9^2+r^2

r^2+6r+9=81+r^2

6r+9=81

6r=72

r=12

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