Draw your own circle with Mapstars.......Map-center is Central Station Amsterdam [1. Click the map to define the center of a cirkel][2.Click again for a radius distance][3. Move the mouse in and out of the circle.][ Refresh or clear to start again!!]
Note:
1. Center= center latitude/longitude of the map/middelpunt van de kaart-lengte en breedte
2. Point on circle= center latitude/longitude of the circle on the map/middelpunt van de cirkel-lengte en breedte
3. Radius on earth= radius of the circle in km on the map/straal van de cirkel op de kaart in km
4. Circumference on earth= outline of the circle in km/omtrek van de cirkel in km
5. Areal on earth= surface of the circle in square km/oppervlakte van de cirkel in vierkante km