When first trying to crop in Acrobat X I had no clue how to crop, as it is different then it was in previous versions. This instructable will show you step by step, how to crop in Acrobat X.
To get started open a PDF in Acrobat X on your computer.
Step 1: Creating a CropBox
The first step is creating a CropBox. This is the area that tells Acrobat X what you wish to crop.
With the document open in Acrobat X, go to the Pages panel, and select Crop.
On the document, draw a rectangle of the area you wish to crop.
Once this is done you may move, or resize the CropBox as you wish.