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A conoical vesel is to be prepared out o...

A conoical vesel is to be prepared out of a circular sheet of metal of unit radius. In order that the vessel has maximum volume, the sectorial area that must be removed from the sheet is ` A_(1) and `the area of the given sheet is `A _(2). If (A_(2))/(A_(1))=m + sqrtn, ` where `m, n in N,` then m+n is equalto .

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The correct Answer is:
`pi(1-sqrt(2/3))`
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