What is the diameter of a cone with a height of 8m and volume of 150pi m^3?

V = PI x r^2 x h/3

150 = 3.14 x r^2 x 8/3

150 = 3.14 x r^2 x 2.67
150 = 8.373 x r^2

r^2 = 150/8.373
r^2 = 17.914
r = sqrt(17.914)
r = 4.23

diameter = r x 2 = 4.23 *2 = 8.46 meters  (Round answer as needed)

The answer would he -4,-2 because the points are just on the opposite side. since the x axis is +4 it's going to he -4 and since the y axis is -2 it stays there because whaen rotated it stays in the third quadrant