If two spheres of radii \[{{r}_{1}}\] and \[{{r}_{2}}\] cut orthogonally, then the radius of the common circle is

\[\sqrt{(r_{1}^{2}+r_{2}^{2}})\]

\[{{r}_{1}}{{r}_{2}}\sqrt{(r_{1}^{2}+r_{2}^{2})}\]

\[\frac{{{r}_{1}}{{r}_{2}}}{\sqrt{(r_{1}^{2}+r_{2}^{2})}}\]

If two spheres of radii \[{{r}_{1}}\] and \[{{r}_{2}}\] cut orthogonal

1.	If two spheres of radii \[{{r}_{1}}\] and \[{{r}_{2}}\] cut orthogonally, then the radius of the common circle is
A.	\[{{r}_{1}}{{r}_{2}}\]
B.	\[\sqrt{(r_{1}^{2}+r_{2}^{2}})\]
C.	\[{{r}_{1}}{{r}_{2}}\sqrt{(r_{1}^{2}+r_{2}^{2})}\]
D.	\[\frac{{{r}_{1}}{{r}_{2}}}{\sqrt{(r_{1}^{2}+r_{2}^{2})}}\]
Answer» E.

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If two spheres of radii \[{{r}_{1}}\] and \[{{r}_{2}}\] cut orthogonally, then the radius of the common circle is

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