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O-LevelMathematicsMensuration4024/12 · May/June 2014 · Q224 Marks

Shape ABCDEFG is made from two squares and a right-angled triangle. AB = 15 cm and BC = 12 cm. [Figure 22.1]

  1. (a)Find the length AG.[2]
  2. (b)Find the total area of the shape.[2]

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Mark scheme

Marking points from the official mark scheme (May/June 2014). The mark or mark type is shown in brackets.

  1. [2] 9
  2. [2] B1 for √15²-12²
  3. [2FT] 279
  4. [2FT] B1 for 0.5 × their 9 × 12
  5. [2FT] B1 for (their 9)²+12²

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About this question

Topic
Mensuration, O-Level Mathematics (syllabus 4024). Structured question, 4 marks.
Source
O-Level Mathematics, May/June 2014 Paper 1 Variant 2, question 22.

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