How do lines of latitude and longitude you locate places on earth surface with greater accuracy

If you draw horizontal and vertical lines on a ball you'd be able to label the lines and identify any point within one of those boxes. The lines of latitude and longitude overlay a grid upon the earth that allow you to reference any point on the surface.By using more precise latitude/longitude coordinates you can achieve the required resolution so for example 3 decimal places in coordinates results in 100m accuracy and 4 decimal places for 10m accuracy.