Considering the volume of the cylinder, it is found that Cai has collected 327.9 grams of trace element.
What is the volume of a cylinder?
The volume of a cylinder of radius r and height h is given by:
[tex]V = \pi r^2 h[/tex].
In this problem, we have that the radius and the height are given, respectively, by:
r = 9.3 cm, h = 17 cm.
Hence the volume of the cylinder in cubic centimeters is given by:
[tex]V = \pi \times (9.3)^2 \times 17 = 4619[/tex]
A water sample shows 0.071 grams of some trace element for every cubic centimeter of water, hence the amount of trace element is given by:
0.071 x 4619 = 327.9 grams.
More can be learned about the volume of a cylinder at https://brainly.com/question/9408912
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