Question 402202
the density of silver was 10.5g/cm3.
 They weighed the figurine on the class balance scales and found that it weighed 300 grams.
 They dropped the figurine into a graduated cylinder of radius 4 cm.
 The water level rose 1.5 cm. Is the figurine pure silver?
 Justify your answer! Is the material of the figurine heavier or lighter per cm than silver?
:
Find the volume of the added level of the water when the object is dropped in it
V = {{{pi*4^2*1.5}}}
V = 75.4 cu/cm
:
Find the density of an object with a vol of 75.4 and a weight of 300 grams
{{{300/75.4}}} = 3.98 gr/cu cm, the material is much lighter
:
:
If the object was pure silver is should weigh:
75.4 * 10.5 ~ 792 grams