How to get the Available CPU and Memory capacity in Cluster via Powershell ?

Hi All,

I'm looking for ps1 command/script to grab the information of Available CPU & Memory from the Cluster using powershell commans of script.

I instaled vCenter server/Powercli on Wn 2008 R2 server.

i need above information in "Resource Allocation Tab" (highlighted in RED box).

Thanks

-Ram