Question

Pls answer this question
If each side of a triangle is increased by 4cm, the ratio of the perimeters of the new triangle and the given triangle is 7:5
Find the perimeter of the given triangle

Answer 1

each side is increased by 4cm .. (given)

let a = b = c = 4x ..(x is commom multiple)

the ratio of perimeter = 7 : 5

the perimeter of triangle = 180

a + b + c = 180

4x + 4x + 4x = 180

12x= 180

x=90

a + b + c = 180

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