What app(s)/website(s) can tell you the possible locations of a place based on its distances from 2 other locations?

[thecel]

If I know that location A is X km from location B and Y km from location C, where might location A be?

I want site(s)/app(s) that can answer the above question.

 

[thecel]

Hello?

 

[AlexanderTheGreat]

Just use Google Earth.
There will be two locations which satisfy the criteria, choose one.