Question 223879
P=2L+2W
L=2W
100=2*2W+2W
100=4W+2W
100=6W
W=100/6
W=16.667 ANS. FOR THE WIDTH. 
L=2*16.667
L=33.333 ANS.
PROOF:
100=2*33.333+2*16.667
100=66.667+33.333
100=100
L<33.333 ANSWERS THE QUESTION AS PRESENTED.