When the oil from a circular cylinder leaked, the formula for the speed of the leak is V = kh^2, where h was the height of the remaining oil and k was constant. If the height of the cylinder is 3, the speed of the leak is Vâ€™, When the height of the oil remaining is 9, what was the speed of the leak, in terms of Vâ€™?
Choices:  A) 9Vâ€™  B) 4Vâ€™  C) Vâ€™/2  D) Vâ€™/4  E) Vâ€™
When h=3 v=V'   So V' = k.9   Hence k = V'/9   Now when h=9   v=(V'/9).9^2   v=V'.9   v=9V'   9Vâ€™ns : 9Vâ€™
<result>A</result>
When the oil from a circular cylinder leaked, the formula for the speed of the leak is V = kh^2, where h was the height of the remaining oil and k was constant. If the height of the cylinder is 3, the speed of the leak is Vâ€™, When the height of the oil remaining is 9, what was the speed of the leak, in terms of Vâ€™?