TRONG H NG GᒰAN ᒰ H TR C TỌA OXYZ CHO M T C (S)

Câu 9: Trong h ng gᒰan ᒰ h tr c tọa Oxyz cho m t c (S): ( x  2) (

 y  1) (

  z 2)

 4 .

Tọa t m I bán nh R c a m t c (S)

A. I (2;1; 2)  R  4 . B. I ( 2; 1;2)   R  2 .

C. I ( 2; 1;2)   R  4 . D. I (2;1; 2)  R  2 .

3

I x dx

 

 ^{= a n 2  b n3( a b z  ) . T ch a b . b ng}