Oil cans x and y are right circular cylinders and the height and radius of y are each thrice those of x. If the oil in can x filled to capacity sells for $4, how much does the oil in y sell for if y is only 1/3rd filled?
Choose the correct answer
A) $30 B) $25 C) $36 D) $40 E) $28
formula for vol of a cyl is PI*r^2*h   so Vy = 27*Vy   y when 1/3rd filled will cost 9 times x so ans is $36
<result>C</result>
Oil cans x and y are right circular cylinders and the height and radius of y are each thrice those of x. If the oil in can x filled to capacity sells for $4, how much does the oil in y sell for if y is only 1/3rd filled?