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The outer radius of a ring is (x + 2y) c...

The outer radius of a ring is (x + 2y) cm and the width is (x + y) cm. What is the area of the ring?

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The correct Answer is:
`pi(x+3y)(x+y)cm^(2)`
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PEARSON IIT JEE FOUNDATION-MENSURATION-Test Your Concepts (Very short Answer Type Questions )
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  8. Find the radius of a sphere whose surface area is 616 cm^(2).

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