A large cylindrical fish tank is being filled with water.
The tank has a radius of 25 cm and a height of 80 cm.
Water flows into the tank at a rate of 4.5 litres per minute.
Calculate the number of minutes it will take to completely fill the empty tank. Give your answer correct to the nearest minute.
91 exam-style questions on OCR GCSE Maths Cylinders. Each one has a worked solution and a mark scheme showing where the marks go.