0580/11 Oct/Nov 2022, Question 21: Finding Missing Sides
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Calculator · 2 marks
اقرأ هذا الحل مشروحاً بالعربي ←
The question, in short
Triangles ABC and DEF are mathematically similar, with AB = 51 cm, DE = 6 cm and EF = 4 cm. Find the length BC.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1AB matches DE, and BC matches EF.
- 2BC/4 = 51/6
- 3Scale factor = 51 ÷ 6 = 8.5
- 4BC = 4 × 8.5 = 34 cm
Answer34
Stuck on a step? Read the free lesson: Finding Missing Sides
Practise more finding missing sides questions
Real 0580 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 finding missing sides
Also searched as: 0580/11/O/N/22 · 0580_w22_qp_11 · 0580 w22 11 · question 21.
Lemmara is an independent study tool, not affiliated with or endorsed by Cambridge International Education. The worked solutions are Lemmara’s own.