Answer:
- none of the above
- r = √221 ≈ 14.866
Step-by-step explanation:
Put the given point into the equation to find the value of r².
(1 +4)² +(12 +2)² = r²
25 +196 = r²
r = √221 ≈ 14.866
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The answer choices are so far off that it makes us suspect a typo in the question. If we assume the point K is supposed to be (1, 1), then the radius comes out √34, matching selection (a).
