AP and TS EAMCET Engineering Model Paper 13

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Question : 19 of 160

Marks: +1, -0

The centre and radius of the sphere r2+r.(−8i+4j−4k)=0 are:

(4,2,2),2√6
(4,2,2),√6
(4,2,2),3√6
(4,2,2),(
1
2
)√6

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