Question

the perimeter of two triangles are 25 and 15 cm respectively. If one side of the triangle is 9 cm,find the length of the corresponding side of the second triangle.​

Answer 1

The perimeters of two similar triangles are 25 cm and 15 cm respectively. If one side of the first triangle is 9 cm, then the corresponding side of second triangle is 5.4 cm.

Let perimeters of two similar triangles be P1 and P2 and their corresponding sides be a1 and a2

$\frac{P1}{P2} = \frac{a1}{a2} \\ \frac{25}{15} = \frac{9}{a2} \\ a2 = 5.4cm$