Edexcel IGCSEMathematicsGeneral Applications3 Marks
Here are two similar triangles. The area of triangle ABC is 20 cm². The area of triangle PQR is 45 cm². The length of BC is 8 cm. Work out the length of QR.
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme. The mark or mark type is shown in brackets.
- M1 for (45/20) or (20/45) or (45/20)² or (20/45)² or 2.25 or 0.444...
- M1 for √(45/20) × 8 or √2.25 × 8 or 1.5 × 8
- A1 for 12
Write your answer and get it marked
On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.
Sign up free →