Question

22.
The perimeters of two similar triangles are 30 cm and 20 cm respectively.
If one side of the first triangle is 9 cm long, find the length of the
corresponding side of the second triangle.​

Answer 1

given perimeters of two similar triangles= 30 and 20

30/20=9/x

cross multiplication

30x= 180

x= 6

hence the corresponding side of second triangle= 6 cm