Acylinder has a volume of 321 cubic units. if a cone has the same height and radius as the cylinder, what is its volume in cubic units? 107 cubic units 214 cubic units 642 cubic units 963 cubic units

Volume of cylinder = pi r^2 h = 321
Volume of cone = 1/3 (pi r^2 h)
Since pi r^2 h are all constants (i.e. in both equations they are the same numbers) we can can say (pi r^2 h) altogether is a constant value, which we already know to be 321, therefore Volume of cone = 1/3(321) = 107 cubic units