A lawn is formed by a square, ABCDABCDABCD, and a semi-circle. Side AB AB\,AB of the square is the diameter of the semi-circle. The radius of the semi-circle is 5 m. The lawn is going to be covered completely with grass seed. A box of grass seed covers 40 m2.
How many boxes of grass seed will be needed? You must show your working.
Practise OCR GCSE Maths Area and Circumference of Circles with exam-style questions for Foundation and Higher tier. 47 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.