Q:
      
      
         
            
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.
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: B) 4         
         
Explanation: let the inner and outer radii be r and R meters
then,  = 352/7
 
=> r = (352/7) * (7/22) * (1/2) = 8m
 = 528/7
 
=> R= (528/7) * (7/22) * (1/2)= 12m
width of the ring = R-r = 12-8 = 4m
       
      
      
      
          View Answer
          Report Error
          Discuss