Question

2 equal sides of a triangle are each 5 meters less than twice the third side . perimeter of the triangle is 55 meters, find the length of its sides?

Answer 1

Let the Length of third side is ( x ) m


Each sides from 2 side = ( 2x - 5 ) m






Given, perimeter = 55 m

=> x + 2x - 5 + 2x - 5 = 55
=> 5x - 10 = 55
=> x = 65/5
=> x = 13 m




Hence, Length of sides are :

x = 13 m
( 2x - 5 ) = 2(13)-5 = 21 m
( 2x - 5 ) = 21 m

Answer 2

Heya !!




Let third side of a triangle be X m.






Two equal sides = ( 2X - 5 ) m.



Perimeter of triangle = 55



2 ( Equal sides ) + Third side = 55



2 ( 2X - 5 ) + X = 55




4X - 10 + X = 55


5X = 55 + 10




X = 65/5



X = 13 m




Third side = X = 13 m



And,


2 Equal sides = 2X - 5 = 2 × 13 - 5 = 21 m.