Answer:
9043.2 cm³
Step-by-step explanation:
V = Ab×h
= π·r²×h
= 3.14×12²×20
= 62.8×144
= 9043.2 cm³
Easy the first one message me if you need more help.
Answer:

Step-by-step explanation:
We know that the parabola faces downard, and hence must have a negative first term, so that eliminates the first and third options.
The vertex of the parabola has an x-value of 2, so it must be of the form
.
Combining these, we have that the answer is 