A concrete block is cast in the shape of a semi-cylinder. The semi-cylinder has a radius of 15 cm and a length of 50 cm.

Work out the volume of the concrete block. Give your answer correct to 3 significant figures.
Work out the total surface area of the concrete block. Give your answer correct to 3 significant figures.
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.