Question 291095
Let x = width
Therefore, x + 61 = length.

Permiter requires 2 each of width & length.

2x + 2(x + 61) = 174
2x + 2x + 122 = 174
4x = 52
{{{highlight(x = 13)}}} width
Therefore, 13 + 61 = 74 length.

Check:  13 + 74 + 13 + 74 = 174.  OK.