Question

A funnel is made up of a partial cone and a cylinder as shown in the figure. The maximum amount of liquid that can be in the funnel at any given time is 16.59375π cubic centimeters. Given this information, what is the volume of the partial cone that makes up the top part of the funnel?
A.15.75π cm3
B. 17.25π cm3
C. 16.33π cm3
D. 12.5π cm3

Answer 1

Wait, where is the figure?

Answer 2

I am assuming that the cone's tip ( the cone that the partial cone would be a part of) will coincide with the bottom of the cylinder

volume when filled = volume of the cone + 2/3 volume of the cylinder
16.59375 pi = (1/3) pi (3)^2 * (h+ 4) + (2/3) pi (0.,75)^2 h


where h is the height of the cylinder

Answer 3

3( h + 4) pi + 0.375 pi h = 16.59375pi
3hpi + 12 pi + 0.375 pi h = 16.59375 pi
3h + 12 + 0.375h = 16.59375
h = (16.59375 - 12) / 3.375
h = 1.3611

Answer 4

the volume of the cylinder = pi * (0.75)^2 * 1.3611

volume of partial cone = 16.59375 - volume of cylinder

Answer 5

this gives 15.83pt which is close but not equal to choice A

Answer 6

Perhaps my initial assumption was not valid
another way to do this would be to use calculus but i dont know if you are familiar with this

Answer 7

http://keisan.casio.com/exec/system/1223372110

this gives 15.75 pi