Question 225466
L=W+3
LW=70
(W+3)W=70
W^2+3W-70=0
(W+10)(W-7)=0
W-7=0
W=7 ANS. FOR THW WIDTH.
L=7+3=10 ANS. FOR THE LENGTH.
P=2L+2W
P=2*7+2*10
P=14+20
P=34 ANS. FOR THE PERIMETER.