Question

The ratio of the sides of a triangle is 3:5:7 . If the shortest side is 12 centimeters,what is the perimeter of the triangle?

Answer 1

Answer:

Let all the sides be x

3x : 5x : 7x

Small side = 12 cm

3x = 12

Therefore x = 4

2nd side = 5x = 20 cm

3rd side = 7x = 28 cm

Perimeter = 12 + 20 + 28 = 60 cm (Answer)

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