SOLUTION: A mental disc 12cm in diameter and 5cm thick is melted down and cast into a cylindrical bar of diameter 5mm thick.how long is d bar

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Question 1140580: A mental disc 12cm in diameter and 5cm thick is melted down and cast into a cylindrical bar of diameter 5mm thick.how long is d bar
Answer by Alan3354(69443) About Me  (Show Source):
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A mental disc 12cm in diameter and 5cm thick is melted down and cast into a cylindrical bar of diameter 5mm thick.how long is d bar
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Find the volume of the disc
Use Vol+=+pi%2Ar%5E2%2Ah
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The volume of the bar is Vol+=+pi%2Ar%5E2%2Ah
Solve for h.
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"diameter 5mm thick." is peculiar.
Note the dim's in cms and in mms.