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anonymous
 one year ago
An ancient gold coin is 2.2 cm in diameter and 3.0 mm thick.If the density Of gold is 19.3g/cm^3, what is the mass of the coin? If gold costs $125.00 per gram ,how much is the gold worth?
anonymous
 one year ago
An ancient gold coin is 2.2 cm in diameter and 3.0 mm thick.If the density Of gold is 19.3g/cm^3, what is the mass of the coin? If gold costs $125.00 per gram ,how much is the gold worth?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thickness=height since it is a coin A coin with thickness as its height makes it a cylinder Volume of a cylinder=pi x height x (radius)^2 Diameter= 2 x radius 2.2cm/2=1.1cm r=1.1cm Convert 3.0mm to cm to make all units the same and because the density is in cm 1mm=0.10cm then 3mm is equal to 0.30cm Volume=3.14 x 0.30cm x (1.1cm)^2=1.139 cm^3 Density=mass/volume 19.3g/cm^3=mass/1.139cm^3 Mass=19.3g/cm^3 x 1.139cm^3 Mass=21.982g Price=number of grams x $125.00 Price=21.982 x $1.25 Price=$2747.83 or $2.7 x10^3
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