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A semi-circular sheet of metal of diamet...

A semi-circular sheet of metal of diameter 28 cm is bent into an open conical cup. The depth of the cup is approximately

A

`1000/3sqrt(3) cm^(3)`

B

`300sqrt(3) cm^(3)`

C

`700/3sqrt(3) cm^(3)`

D

`1078/3sqrt(3) cm^(3)`

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