Question

Two equal sides of a triangle are each 5 meters less than twice the third side. If the
perimeter of the triangle is 55 meters, Tind the length of its sides? ​

Answer 1

Step-by-step explanation:

let third side =x

acc to question

perimeter is 55= first side+ second side+ third side

55= 2x-5 + 2x-5+ x

55= 5x -10

55+10=5x

65=5x

65/5=x

13=x

hence

third side=13

first side= second side = 2*13-5=21

Answer 2

Step-by-step explanation:

Let the length of third side be " x " units

length of equal sides = (2x -5) units

Now ,

Perimeter of triangle = 55

⇒ x + ( 2x - 5 ) +( 2x -5 ) = 55

⇒ 5x - 10 = 55

⇒ 5x = 65

⇒ x = 13

So , length of sides are 13 m, 21 m and 21 m.