Cross section<span> is a cut at an angle perpendicular to its axis so its interior </span>structure can be viewed<span>.
</span>A structural section describes a house's foundation assembly. This structural section refers to the section of the assembly that is horizontal and it shows the basic shell of the house.
187.7000000 is the answer.
Different people have different concerns. Some people see the environment as a beautiful thing that we need to protect and conserve. Some people do not care about the environment at all or they do not see the problems as problems.
Density is mass per volume 
With data: 
.
Hope this helps.
