Answer:
The answer is option 5.
Step-by-step explanation:
The formula is V = 1/3×π×r²×h where r represnt radius and h is height. Given that the diameter of cone is 8 inches so the radius is 4 inches then substitute the value into the formula :

Let r = 4,
Let h = 12,


A=45 degree I had the same example ... Even if a angle is 90 degrees is not necessarily a right triangle, so the angle A = 45 degrees
Hope this helps....
The factors of 27 are all #'s btwn -27 and 27 that / 27 evenly.
-27, -9, -3, -1, 1, 3, 9, 27