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Question
50. A conical hole is drilled in a circular
cylinder of height 15\( \mathrm { cm } \) and radius \( 8 \mathrm { cm } , \)
which has same height and same base
radius. Find the total surface area after drilling of cone
Itdke, \( \pi = 3.14 ] \) CBSE 2015
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Solution
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