It is A because opposite of angle 27 degrees is the same angle if you see
Same as before, to make the formula do
t(1) * (r)^n-1
So 5 * (-1/2)^n-1
Therefore
5*(-1/2)^5
0.078125
Use hypotenuse leg theorem.
Answer:

Step-by-step explanation:

Their radii, their diameters, their circumference, and their area will all be proportionate. But I think that all circles are proportionate.