Question 260084
W=L-4
2W+2L=72
2(L-4)+2L=72
2L-8+2L=72
4L=72+8
4L=80
L=80/4
L=20 ANS. FOR THE LENGTH.
W=20-4=16 ANS. FOR THE WIDTH.
PROOF:
2*16+2*20=72
32+40=72
72=72