Answer:
Hi There the correct answer to this is 66
Step-by-step explanation:
So if you know the perimeter form the is = 2(l + w) or l + l + w +w And Sooo The length is 45 + w following the formula 2(45 + w) + 2w = 174
90 + 2w + 2w = 174
4w = 84
w= 21
So the length is 45 + w, w= 21
45+ 21 = 66 That how you get the answer!