The diagram shows a small triangle XYW XYW\,XYW inside a larger similar triangle XZVXZVXZV. The line YW YW\,YW is parallel to ZVZVZV.

XY:XZ=1:4XY:XZ = 1:4XY:XZ=1:4 YW=9 mYW = 9\text{ m}YW=9 m XY=6 mXY = 6\text{ m}XY=6 m
Calculate the length of ZVZVZV.
Calculate the length of YZYZYZ.
26 exam-style questions on Edexcel GCSE Maths Similar Shapes (Lengths). Each one has a worked solution and a mark scheme showing where the marks go.