There are 2.54 cm in one inch and there are 18 inches in half a yard so there are 2.54 times 18 = 45.72 cm in half a yard.
Only basic disks can be cloned with Acronis True Image 2016. You cannot clone dynamic disks. Checking if you have basic or dynamic disks. You can use Windows Disk Management to see if you have basic or dynamic disks: Hit Start-Run and type in diskmgmt.msc.
As long as you use only simple volumes or partitions, you can easily convert between a basic disk (and partition) and a dynamic disk (and a volume). Once you use a feature that is supported only on dynamic disks, however, changing back to a basic disk will mean data loss.