Answer:

Step-by-step explanation:
Let the unknown angle be x
As the interior angles in a triangle are added up to 180°

Hope this helps you.
Let me know if you have any other questions:-)
H=(√3)*a/2 = 41.2
So, a=2*41.2/√3=47.6
Nor sure what you're doing on the bottom but use point slope thing
y-0=-2(x+2)
y=-2x+2
So not sure what you're asking but...
yeah, you're right.
Answer:
I cant see the question :/
Step-by-step explanation:
V = pi * r^2 * h
V = pi * 12^2 * 9
V = pi * 144 * 9
V = pi * 1296
V = 1296 pi