Question

The perimeter of two similar triangles are 30cm and 20cm respectively.If one side of first triangle is 12cm,determine the corresponding side of the second triangle

Answer 1

Given:

Perimeters = 30 cm, 20 cm

One side = 12 cm

To find:

Other corresponding side

Solution:

We know that:

Ratio of sides = Ratio of perimeters

=> 30/20 = 12/x

=> 3/2 = 12/x

=> x = 12×2/3

=> x = 8 cm

_________

Answer 2

Solutions:

Ratio of side = Ratio of perimeter

30/20 = 12/x

3/2 = 12/x

3x = 24

x = 8cm

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