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O-LevelMathematicsNumber4024/11 · Oct/Nov 2013 · Q52 Marks

The length of a side of a square is given as d cm, correct to the nearest 10cm. Find an expression in terms of d for

  1. (a)the upper bound of the perimeter of the square,[1]
  2. (b)the lower bound of the area of the square.[1]

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About this question

Topic
Number, O-Level Mathematics (syllabus 4024). Structured question, 2 marks.
Source
O-Level Mathematics, Oct/Nov 2013 Paper 1 Variant 1, question 5.

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