Question

Two sides of a triangle are each 5m less than twice the third side. If the perimeter of the triangle is 55 m, find length of its sides.

Answer 1

Answer:

Step-by-step explanation:

let the length of third side be 'X"

let the length of first and second side be '2X - 5'

Perimeter of triangle = 55m

...perimeter of = first side + second side + third side

... 55 = (2X - 5) + (2X - 5) + X

... 55 = 2X - 5 + 2X - 5 + X

... 55 = 5X - 10

... 55 + 10 = 5X

... 65 = 5X

... 65 / 5 = X

13 = X

Therefore, now,

X = 13

2X - 5 = 2(13) - 5 = 26 - 5 = 21

2X - 5 = 2(13) - 5 = 26 - 5 = 21

Hence, done