Find the radius of the sphere x2 + y2 + z2 = 22 ?

1.	Find the radius of the sphere x2 + y2 + z2 = 22 ?
A.	√12
B.	√17
C.	√19
D.	√22
Answer» E.

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Find the radius of the sphere x2 + y2 + z2 = 22 ?

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