The volume of a cylinder can be calculated using the formula V=pi× r^2h, where r is the radius of the base, and h is the height of the cylinder. Express the variable r in terms of V and h.​

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?