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Point B is a point of tangency. Find the radius r of ⊙C.

Point B Is A Point Of Tangency Find The Radius R Of C class=

Sagot :

Irspowidn

Answer:

Step-by-step explanation:

By the Pythagorean Theorem we know

(r+7)^2=r^2+14^2

r^2+14r+49=r^2+196

14r+49=196

14r=147

r=10.5

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