Which describes a virus?

Viruses produce toxins that damage cells.

Viruses enter host cells to reproduce.

Viruses reproduce best in warm, dark places.

Viruses damage cells indirectly.

Ahole in the ground in the shape of an inverted cone is 14 meters deep and has radius at the top of 11 meters. the cone is filled to the top with sawdust. the density of the sawdust depends upon the depth, x, following the formula ρ ( x ) = 2.5 + 1.2 e − 0.7 x kg/m3. find the total mass of sawdust in the conical hole.