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 $3, how much does the oil in y sell for if y is only half filled? Choose the correct answer:
A) $11	B) $12	C) $13	D) $14	E) $18
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 $12
<result>B</result>
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 $3, how much does the oil in y sell for if y is only half filled?