a sand pile in a shape of an upside-down cone has a volume of 350 m2 . The diameter of the base pof the pile is 7m. what is the height of the sand pile?

Answer 1

V = 1/3 pi r^2 h

350 = 1/3(pi) (3.5)^2 h

1050 = 12.25pi *h

1050 = 12.25(3.14) h

1050 = 38.465h

38.465h/38.465 = 1050/38.465

h = 27.29754