A circle has a radius of k k\,kcm, correct to 2 decimal places.
Work out the lower bound for the circumference of the circle.
Give your answer in terms of kkk.
Work out the upper bound for the area of the circle.
Give your answer in terms of kkk.
193 exam-style questions on Eduqas GCSE Maths Bounds. Each one has a worked solution and a mark scheme showing where the marks go.