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A bucket is in the form of a frustum of...

A bucket is in the form of a frustum of a cone whose radii of bottom and top are 7 cm and 28 cm respectively. If the capacity of the bucket is 2156 cm, find the whole surface area of the bucket. (Use `sqrt(445)=21.095)`

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The correct Answer is:
`2474.45 cm^(2)`
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