A concrete column has a diameter of 380 and a length of 2.4 mm . If the density (mass//volume) of concrete is 2.45 Mg/m3Mg/m3, determine the weight of the column in pounds.

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.