Oil cans x and y are right circular cylinders and the height and radius of y are each twice those of x. If the oil in can x filled to capacity sells for $2, how much does the oil in y sell for if y is only half filled?
Can someone please explain this one? thanks.
formula for vol of a cyl is PI*r^2*h
so Vy = 8*Vy
y when half filled will cost 4 times x so ans is E