Answer:
Area = PI * radius^2
radius^2 = Area / PI
radius^2 = 169*PI/PI
radius^2 = 169
radius = 13
Step-by-step explanation:
according to Pythagorean theorem a²+b²=c² ; when c is hypotenuse .
letter a
hope it helps
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Because is flipped over.
Then you need to -2.