Finding the radius of a cylinder
I am a very new member that had not made a new account because I was banned or anything ;-)
Can anyone please show me how to answer the following question: (my exam is tomorrow so please the sooner the better)
Water comes from a cylindrical tank.
When 2 cubic metres of water leave the tank, the level of water in the tank goes down by 1.3 millimeters. Calculate the radius of the tank, in metres, correct to one decimal place.
the answer is r= sqrt(2/pie*0.0013) = 22.1
IBstudent, ow sorry I mean IGCSEstudent :)