Answer:
C
Step-by-step explanation:
The lines mean the distance away from 0. When i say lines, I mean the two "l" that accompany the numbers. I forgot what there called (good job me).
Since we want to know how far apart they are, we need to add them.
Answer:
Hyperbola
Step-by-step explanation:
Its just like a parabola, but with 2 equal cones making them on opposite sides.
Answer: 918km^2
Step-by-step explanation:

Let x be the new dimension of the area;


The volume of a cone is (1/3) that of its similar cylinder.
Thus the volume of the cone B would be: