Question

if each sides of a triangle in increased by 4 cm the radio of the perimeter of the new triangle and the given triangle is 7:5. find the perimeter of the give triangle ​

Answer 1

Answer:

perimeter of the triangle is 30cm.

Explanation:

Let the sides of triangle be x, y and z

so, perimeter =x+y+z

now, according to question,

each sides are increased by 4cm.

new perimeter=x+4+y+4+z+4

Now, (x+y+z+12)/(x+y+z)=7/5

5x+5y+5z+60=7x+7y+7z

2x+2y+2z=60

2(x+y+z)=60

(x+y+z)=30

so, the perimeter of the triangle is 30cm.

HOPE IT HELPS YOU.

mark it as brainliest.