Answer:
10.5 units.
Step-by-step explanation:
A=2l+2w
34=2(x) + 2(6.5)
34= 2x+13
-13 -13
21=2x
_ _
2 2
x=10.5
Equation ---- 34=6.5(2)+L(2)
Length = 10.5
34=6.5(2)+L(2)
multiple known valuables
34=13+L(2)
Subtract 13 from each side
21=L(2)
divide each side by 2
10.5=L
