How much sand and cement do you need to fill a 6 meters x 1.70m?

Calculating that is a CUBIC measurement, which means you need a value for width, Length and depth. in metric measure it is easier than English standards ..

Once you have those three just multiply the three & you will know how much you need.

IF your fill area is 2 Meters wide, 3 meters long and 1/2 meters deep the equation calculates like this (2X3X .5)=3 cubic meters

Hope that helps