How is calculating the volume of a sphere similar to calculating the volume of a cylinder and how is it different ?

Normally, you can calculate the volume of a cylinder with this formula: Volume = Pi * r^2 * h. Thus, the volume of this cylinder is: Volume = Pi * 4^2 * 8 = 402.12 sq. inch.

Step-by-step explanation:

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.