A rectangular poster has a length of 80 cm measured to the nearest 10 cm and a width of 45 cm measured to the nearest 5 cm.
Work out the lower bound for the perimeter of the poster.
Work out the upper bound for the area of the poster.
Practise OCR GCSE Maths Bounds with exam-style questions for Foundation and Higher tier. 52 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.