Hello ITPSTBN
Welcome to Communities! Some useful info on participating here:
https://communities.vmware.com/docs/DOC-12286
Those appear to be the size of the VMs disks - this would not account for other files on the datastore such as snapshots and .vswp and/or anything else you have on there (e.g. ISOs) - check the usage via df -h.
.vswp are equal to the size of the RAM assigned to the VMs minus reservation.
Each level of snapshot can potentially grow to be the same size as their parent disk so do make sure you consolidate snapshots as soon as they are not needed - preferably only run on these for minutes/hours not days/weeks.
Bob