Crushed stone density is variable ranging from 2.4 - 2.7 Metric Tons per cubic Meter depending on the type of stone, the stone crushing machinery, and how the crushed stone is sorted after crushing.
8000 cubic mm
1133333.33 g/m3
between 1500 to 1650
20 mm should still be 20 mm!
None but 20 mm = 2 cm
160 mm -200 mm
20 mm - 0.2mm = 19.8
neither - it is area. 1 mm cubed is volume
20 millimeters=0.78 inches Direct Conversion Formula 20 mm* 1 in 25.4 mm = 0.7874015748 in
20 mm cannons.
Circumference = 20*pi mm