Answer: B and D are correct.
Step-by-step explanation:
A is wrong because they will eventually intersect (the arrows show that the line continues on).
B is correct; that is where they will intersect.
C is wrong because they only intersect at one point, and that's where the solution is.
D is correct because they intersect once and have only one solution.
Answer:
Step-by-step explanation:

Answer:
4r to the power of 2 - 3r +1
Basically apply your radius and slant height to the formula to find the surface area of a cone which is S=3.14r^2+3.14rl