The areas of two concentric circles are \[962.5\text{ }c{{m}^{2}}\]and \[1386\text{ }c{{m}^{2}}\]respectively. The width of the ring is _____.

The areas of two concentric circles are \[962.5\text{ }c{{m}^{2}}\]and

1.	The areas of two concentric circles are \[962.5\text{ }c{{m}^{2}}\]and \[1386\text{ }c{{m}^{2}}\]respectively. The width of the ring is _____.
A.	\[3.4\text{ }cm\]
B.	\[3.5\text{ }cm\]
C.	\[3.2\text{ }cm\]
D.	\[3.1\text{ }cm\]
Answer» C. \[3.2\text{ }cm\]

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The areas of two concentric circles are \[962.5\text{ }c{{m}^{2}}\]and \[1386\text{ }c{{m}^{2}}\]respectively. The width of the ring is _____.

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