A rectangular garden plot has a length of 12 m, to the nearest 0.5 m, and a width of 8 m, to the nearest 0.2 m.
Work out the lower bound for the perimeter of the garden plot.
Work out the upper bound for the area of the garden plot.
52 exam-style questions on OCR GCSE Maths Bounds. Each one has a worked solution and a mark scheme showing where the marks go.