The equation for a circle is x^2+y^2=r^2 so the radius is the square root of 16 which is 4. Then you take y-2 and set it equal to 0. This gives you y=2 as the y coordinate of the center. You then set x+4 equal to 0 which gives you x=-4 which is the x coordinate of the center. So the radius is 4 and the center is at (-4,2)
Answer:
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Step-by-step explanation:
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All triangles should equal 180 so the answer is B. When you solve it you get 60, 60, 60 which equals 180