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The Center and Radius of the Sphere x2+y2+z24z=0x ^ { 2 } + y ^ { 2 } + z ^ { 2 } - 4 z = 0

Question 37

Multiple Choice

The center and radius of the sphere x2+y2+z24z=0x ^ { 2 } + y ^ { 2 } + z ^ { 2 } - 4 z = 0 are


A) (0,0,2) ;2( 0,0 , - 2 ) ; 2
B) (0,0,2) ;2( 0,0 , - 2 ) ; 2 .
C) (0,0,2) ;1( 0,0 , - 2 ) ; 1
D) (0,0,2) ;1( 0,0,2 ) ; 1
E) (0,0,2) ;2( 0,0,2 ) ; 2

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