We’re being asked to determine the mass of a sphere of gold (Au) given that it has a radius of 28.5 cm and a density of 19.3 g/cm3.
Recall that density is the ratio of the mass and volume of an object:
Also, the volume of a sphere is given by:
r = radius.
A thief plans to steal a gold sphere with a radius of 28.5 cm from a museum. If the gold has a density of 19.3 g/cm3, what is the mass of the sphere in pounds? [The volume of a sphere is V = (4/3)πr3.]
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What scientific concept do you need to know in order to solve this problem?
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Based on our data, we think this problem is relevant for Professor Ervin's class at UNR.