Answer:
It isn't necessary but having a positive coefficient for 
makes things like completing the square and factoring easier.
= 19 this is the answer I'm guessing since 16-12= 4 so 16 is 4 more than 12
Answer:
Area of the sector = 47.52π
Step-by-step explanation:
Area of the sector of the circle;
A = ∅ / 360 * πr²
We know that;
∅ = 120
r = 12
So now we can substitute;
A = (120 / 360) * π(12)²
A = 0.33 * 144π
A = 47.52π
Hope this helps!
Answer:
A = h b/2
Step-by-step explanation:
