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Goryan [66]
3 years ago
9

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

Mathematics
1 answer:
Nookie1986 [14]3 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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