Question 323042
P=2L+2W
L=2W-4
34=2(2W-4)+2W
34=4W-8+2W
34=6W-8
6W=34+8
6W=42
W=42/6
W=7 cm. for the width
L=2*7-4
L=14-4
L=10 cm. for the length.
PROOF:
34=2*10+2*7
34=20+14
34=34