It should be the last one because when you multiply 0x1/2 it’s 0 then add three and it’s three. And half of one is 1/2 plus three is 3 1/2. Half of 2 is 1 plus 3 is 4. Half of 3 is 1 1/2 plus 3 is 4 1/2.
We want to prove

which is akin to saying that, for any given
, we guarantee that

for all
exceeding some threshold
.
We want to end up with


which suggests that we guarantee that
is arbitrarily close to 1 if
. (Take the ceiling to ensure
is a natural number.)
Now for the proof: Let
be given. Then for
we have

QED
The volume is given by

Since the height is 3 times the radius of the base, we can substitute
:

And we know that the volume is
(I'm actually assuming that there's a typo in the question, otherwise the options wouldn't match):

The height is 3 times the radius, so it is

1.50 x R, R being the rides a visitor rides.
(Not 100% sure.)
Answer:
Look down
Step-by-step explanation:
1) 40pi meters^2
2) 8100pi yards^2
3) 324 pi meters^2