Find the volume of the cone in terms of pi, and rounded to the nearest cubic meter.

17,645pi m3; 55,433 m3
70,583pi m3; 221,744 m3
52,937.5pi m3; 166,308 m3
26,468.75pi m3; 83,154 m3

The volume of this cone is equal with the volume of this cylinder divide 2 

V_cylinder = area of base time height = 27,5^2 *3,14 *70 = 166223,75 m^3

V_cone = 166223,75/2 = 83111,875 m^3

so the last one choice will be right sure 

hope this will help you