Android Studio SDK location
This is the sdk path Android Studio installed for me: "C:\Users\<username>\appdata\local\android\sdk"
I'm running windows 8.1.
You can find the path going into Android Studio -> Configure -> SDK Manager -> On the top left it should say SDK Path.
I don't think it's necessary to install the sdk separately, as the default option for Android Studio is to install the latest sdk too.
For Mac/OSX the default location is /Users/<username>/Library/Android/sdk
.
Android Studio on Windows 8:
C:\Users\username\AppData\Local\Android\sdk\extras\intel\Hardware_Accelerated_Execution_Manager\intelhaxm-android.exe
(in username : please enter valid username)
Install it and restart your Android Studio.
The above steps are similar for win 7 and also same for eclipse.
Update: Windows 10 (similar steps) - pointed out by RBT
I had forgot where the sdk location was installed to so what I did was open Android Studio and selected Settings
then used the following submenu
Current 1/1/2017:Tools -> SDK Manager
outdate: Appearance & Behavior -> System Settings -> Android SDK
There the sdk location was listed as Android SDK Location