please help me with this question i don’t understand it.
I'll call the length L and the width W.
[tex]l = 2w[/tex]
The perimeter is twice the sum of the length with the width
[tex]138 = 2(l + w) \\ \\ 69 = 2w + w \\ \\ w = 23 \\ \\ l = 46[/tex]