Finding the sides of a parallelogram

I was working through a problem the other day, and the approach I used led me to a point where I had to find the slant length. I thought that it would be easy, but I after thinking about it and attempting it, I realized I have no clue how to approach this. Any help would be greatly appreciated.

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The height of this particular parallelogram is 3, while the top and bottom base are both 5. I am again, looking to find the sides d and b. Is there anyway to do this? Thanks!

There is not enough information given to determine a unique answer.
You need the measure of at least one of the angles.

Hmm that is what I thought. I will go about finding one of the angels, and then post again. There may be more information in the original problem that I can apply. Thanks for the response!

EDIT: Seems as though I was approaching the problem wrong. I now have the solution, and did not need the slant lengths. Thanks for the help anyway!