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Find the Center and Radius of the Sphere 3x2+3y2+3z22x+2y=93 x ^ { 2 } + 3 y ^ { 2 } + 3 z ^ { 2 } - 2 x + 2 y = 9

Question 214

Multiple Choice

Find the center and radius of the sphere.
- 3x2+3y2+3z22x+2y=93 x ^ { 2 } + 3 y ^ { 2 } + 3 z ^ { 2 } - 2 x + 2 y = 9


A) (13,13,0) ,a=293\left( \frac { 1 } { 3 } , - \frac { 1 } { 3 } , 0 \right) , \mathrm { a } = \frac { \sqrt { 29 } } { 3 }
B) (19,19,0) ,a=299\left( - \frac { 1 } { 9 } , \frac { 1 } { 9 } , 0 \right) , a = \frac { \sqrt { 29 } } { 9 }
C) (13,13,0) ,a=299\left( - \frac { 1 } { 3 } , \frac { 1 } { 3 } , 0 \right) , a = \frac { 29 } { 9 }
D) (13,13,0) ,a=293\left( - \frac { 1 } { 3 } , \frac { 1 } { 3 } , 0 \right) , \mathrm { a } = \frac { \sqrt { 29 } } { 3 }

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