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Volume of a cylinder is defined as:
v = volume
r = radius
h = height.
V = (r^2)h
In this problem,
v = 1,356.48 in^3
r = 6 in
h = ?
Plug our numbers into the volume formula above.
1,356.48 in^3 = (6^2)h
Divide both sides by (6^2) to isolate variable h
12.0 = h
The height of the cylinder is 12.0 inches
In both cases, we can use a rule of three.
<h2>First part</h2>Therefore, 4 students correspond to 20% of 20 students in total.
<h2>Second part</h2>Therefore, 2 doctors correspond to 8% of 25 doctors in total.