4MA1/2FR Jun 2020, Question 20: Pythagoras' Theorem
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2FR (Foundation) · Calculator · 4 marks
اقرأ هذا الحل مشروحاً بالعربي ←
The question, in short
Find the total cost of steel needed to build right-angled triangle ABC with AB = 4.3 m and BC = 6.4 m, at $22 per metre, bought in whole metres.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 4 marks
- 14.3² = 18.49
- 26.4² = 40.96
- 318.49 + 40.96 = 59.45
- 4√59.45 = 7.71
- 54.3 + 6.4 + 7.71 = 18.41
- 6Since steel must be bought in whole metres, round up 18.41 to 19
- 719 × 22 = 418
Answer$418
Stuck on a step? Read the free lesson: Pythagoras' Theorem
Practise more pythagoras' theorem questions
Real 4MA1 past-paper questions, marked on your working like the exam, with a worked solution for every part.
Practise free on LemmaraMore past-paper questions on pythagoras' theorem
Also searched as: 4MA1 2FR June 2020 · 4MA1/2FR · 4ma1 jun20 2fr · question 20.
Lemmara is an independent study tool, not affiliated with or endorsed by Pearson Edexcel. The worked solutions are Lemmara’s own.