Final answer:
To check the type of a variable in PowerShell, use the Get-Member command and run $a | Get-Member. The type of variable 'a' in $a = 5.5 is Double.
Step-by-step explanation:
To check the type of a variable in PowerShell, you can use the Get-Member command. In this case, you would use the command $a | Get-Member. This command will display information about the variable 'a', including its type.
For the variable 'a' in the code snippet $a = 5.5, the type of 'a' would be Double. The 'Double' type represents a 64-bit floating-point number in PowerShell.