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Post Test: Coordinate Geometry and Circles
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Select the correct answer.
Circle O is represented by the equation (x + 7) + ( + 7)2 = 16. What is the length of the radius of circle o?
O A.
3
OB. 4
OC. 7
OD. 9
0
E.
16
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Respuesta :

Answer:

B. 4

Step-by-step explanation:

The formula for this equation is (x-h)²+(y-k)²=r²

So 16 is represented by r² in that equation

All you have to do is find the square root of 16, which is 4, so the answer is B. 4

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