Two concentric circles form a ring. The inner and outer circumference of the ring are 352/7 m and 528/7m respectively.Find the width of the ring.  Select the correct option:
A) 2  B) 4  C) 5  D) 6  E) 78
Explanation:   let the inner and outer radii be r and R meters   then, \inline {\color{4lack}2\prod r} = 352/7   =&gt; r = (352/7) * (7/22) * (1/2)= 
<gadget id="calculator">(352/7) * (7/22) * (1/2)</gadget>
<output>8</output>
8m   \inline {\color{4lack}2\prod R}= 528/7   =&gt; R= (528/7) * (7/22) * (1/2)= 
<gadget id="calculator">(528/7) * (7/22) * (1/2)</gadget>
<output>12</output>
12m   width of the ring= R-r = 12-8= 
<gadget id="calculator">12-8</gadget>
<output>4</output>
4m   Answer: 4) 4
<result>B</result>
Two concentric circles form a ring. The inner and outer circumference of the ring are 352/7 m and 528/7m respectively.Find the width of the ring.