Question 740832
AREA=L*W
L=W+3
2,160=(W+3)W
2,160=W^2+3W
W^2+3W-2,160=0
(W+48)(W-45)=0
W-45=0
W=45 ANS. FOR THWE WIDTH.
L=45+3=48 ANS. FOR THE LENGTH.
PROOF:
2,160=45*48
2,160=2,160
P=2L+2W
P=2*48+2*45
P=96+90
P=186 ANS. FOR THE PERIMETER.