The cone in the figure above has a volume of 72x cubic centimeters and a height of 6 centimeters. What is the radius of the base of the cone, in centimeters?

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.

justin bieber ml.

(-5,-28)

i graphed to on desmos.