Answer:
10.5 units
Step-by-step explanation:
From the question;
We are supposed to determine the length of the rectangle;
P = 2(L+W), where L is the length and W is the width.
Therefore, in this case;
34 units = 2(L + 6.5 units)
We get;
34 units = 2L + 13
Solving for L,
2L = 34 - 13
2L = 21
L = 10.5 units
Thus, the length, L, of a rectangle is 10.5 units