How many different sphere of radius ?r? can be drawn which touches all the three co-ordinate axes

How many different sphere of radius ?r? can be drawn which touches all

1.	How many different sphere of radius ?r? can be drawn which touches all the three co-ordinate axes
A.	4
B.	2
C.	6
D.	8
Answer» E.

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How many different sphere of radius ?r? can be drawn which touches all the three co-ordinate axes

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