Question 684332
P=2L+2W
L=2.8+4W

38.6=2(2.8+4W)+2W
38.6=5.6+8W+2W
38.6-5.6=10W
10W=33
W=33/10
W=3.3 CM. FOR THE WIDTH.
L=2.8+4*3.3
L=2.8+13.2
L=16 CM FOR THE LENGTH.
PROOF:
38.6=2*16+2*3.3
38.6=32+6.6
38.6=38.6