SOLUTION: A platinum bar is 3 cm. wide, 3 mm. thick, and 3 dm. long. Platinum weighs 21.5 times as heavy as water. Find weight of the bar in gms. Not sure how solve.

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Question 1132866: A platinum bar is 3 cm. wide, 3 mm. thick, and 3 dm. long. Platinum weighs 21.5 times as heavy as water. Find weight of the bar in gms.
Not sure how solve.

Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
density=mass%2Fvolume
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3%2Acm%2A3%2Amm%2A%28%281%2F10%29%28cm%2Fmm%29%29%2A3%2Adm%2810%28cm%2Fdm%29%29

27%2Acm%5E3volume

Can you do the rest?

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Platinum weighs 21.5 times as heavy as water.
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Water is about 1.00 grams per cubic centimeter; so this would mean platinum should be 21.5 grams per cubic centimeter.
27%2Acm%5E3%2A21.5%28grams%2Fcm%5E3%29=581%2Agrams