The second side of a triangle is 4cm longer than the first, The third side is 1 less than twice the first, The perimeter is 55cm. Find the lengths of all three sides.

Question

asked Sep 8, 2020 234k views

2 Answers

Rya · Answer 1 · 2020-09-13T17:15:22+0000

Answer:

13 , 17 and 25 cm.

Explanation:

Let the length of the first side be x cm.

Then the second is x+4 and the third is 2x-1 cm long.

As the perimeter = 55 cm we have the equation:

x + x + 4 + 2x - 1 = 55

4x + 3 = 55

4x = 52

x = 13 cm.