You should find it in :
C:UsersUser NameAppDataLocalAndroidsdkplatform-tools
Add that to path, or change directory to there. The command sqlite3 is also there.
In the terminal you can type commands like
adb logcat //for logs
adb shell // for android shell
In Windows 10 while installing Android SDK, by default latest SDK gets installed.
Platform List is part of Android SDK and the best way to find the location is to open SDK manager and get the path.
It will be available at:
Android SDK Location: C:Users
In SDK Manager, SDK path can be found by following the below
Appearance & Behaviour –> System Settings –> Android SDK
You can get the path where SDK is installed and can edit the location as well.