Question

if the side of the triangle is increased by 10.c.m. then the ratio of the perimeter of the new triangle after increasing the side og the given triangle and the new is 5:4 . find the perimeter of the given triangle and the new triangle​

Answer 1

Answer:

Let each side be x perimeter of the triangle= 3x New perimeter= 3x+30 therefore,

3x+30:3x=5:4

(3x+30)/3x=5/4

4(3x+30)=3x(5)

12x+120=15x

120=15x-12x

=3x

120/3=x

40=x

perimeter of given tringle=3x

3(40)

=120cm