Quèstion 5 Find the center and radius of the sphere x? – 4x – 6+ y? + 18y + z? - 6z = 0 O A. C (2,- 9,3), r = ОВ. С(-4, 18,- 6), r%3D6 ОС.С (2,9, -3), r%3D 10 O D.C(-2,9,3), r = 6 O E. C (2,-9,3), r = 100

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