Question 233839
L=2W+4
2L+2W=140
2(2W+4)+2W=140
4W+8+2W=140
6W=140-8
6W=132
W=132/6
W=22 ANS. FOR THE WIDTH.
L=2*22+4=44+4=48 ANS. FOR THE LENGTH.
PROOF:
2*48=2*22=140
96+44=140
140=140