Answer: The sides are 13, 21, & 21 meters
Explanation:
Let x represent the length of the base. Then the congruent side lengths are 2x - 5.
Perimeter is the sum of the sides so
(2x - 5) + (2x - 5) + (x) = 55
5x - 10 = 55
5x = 65
x = 13
The length of the base is 13 meters.
The congruent side lengths are 2(13) - 5
= 26 - 5
= 21