Answer :
To find the volume of the marbles, Dennis would need the volume of a sphere. This is [tex]4/3r^3 \pi [/tex].
To find the volume of the cylinder, he would want to know how to calculate the volume of a cylinder (Based off of radius and height). This is [tex]r^2h \pi [/tex].
To find the volume of the cylinder, he would want to know how to calculate the volume of a cylinder (Based off of radius and height). This is [tex]r^2h \pi [/tex].