Two concentric circles form a ring. The inner and outer circumferences
of ring are (352/7) m and (518/7) m respectively. Find the width of the
ring.
Let the inner and outer radii be r and R metres.
Then 2âˆr = (352/7)<=> r =((352/7) X (7/22) X (1/2))=8m.
2âˆR=(528/7)<=>R=((528/7) X (7/22) X (1/2))= 12m.
=>Width of the ring = (R-r) = (12-8) m = 4 m.
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