The perimeter of a rectangle is 34 units. Its width is 6.5 units

To find the length of the rectangle, we can use the formula for the perimeter of a rectangle:

Perimeter = 2(length + width)

Given that the perimeter is 34 units and the width is 6.5 units, we can substitute these values into the formula:
34 = 2(length + 6.5)

Now we can solve for the length:
34 = 2(length + 6.5)
17 = length + 6.5
17 - 6.5 = length
10.5 = length

Therefore, the length of the rectangle is 10.5 units.