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प्रश्न
A solid cylinder of radius r and height h is placed over another cylinder of same height and radius. The total surface area of the shape so formed is ______.
रिकाम्या जागा भरा
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उत्तर
A solid cylinder of radius r and height h is placed over another cylinder of same height and radius. The total surface area of the shape so formed is 2πr (r + 2h).
Explanation:
The exposed surface consists of the curved surface of both cylinders and the two circular outer bases.
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