A wood board that is in the shape of a rectangular prism measures 0.3 mile by 2.1 miles by 0.1 mile and has a mass of 0.07 kilogram
what is the density of the board?
round final answer to nearest tenth
Mass = Density * Volume
Mass / Volume = Density
The volume of the board is 0.3 * 2.1 * 0.1 = .063 miles^3
So....the density is
0.07 kg / .063 miles^3 =
1.1 kg / miles^3
Boy, that is some density of "wood board". By the way, it is equivalent to a density of 1 drop of water in a small pond the size of about 75 Olympic swimming pools!!!.
+491 
