A cylindrical water tank has a height of 20 m and a radius of r r\,r m.
The volume of the tank is 1125π 1125\pi\,1125π m3^33.
Calculate the value of rrr.
Practise OCR GCSE Maths Cylinders with exam-style questions for Foundation and Higher tier. 98 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.