If the radius of a cylinder is made 3 times and so is the height, what is the new volume of the cylinder divided by the old one? Select the correct option
A) 27. B) 2. C) 6. D) 4. E) 10.
let v and v' be the original and the changed volume   now   v=pir^2h   v'=pi(3r)^2(3h)   v'=27v   27.) 27
<result>A</result>
If the radius of a cylinder is made 3 times and so is the height, what is the new volume of the cylinder divided by the old one?