Answer:
divide it by the radius
Step-by-step explanation:
2(5y - 2) = 12 + 6y
7y - 4 = 12 + 6y ⇒ wrong, it has to be: 10y - 4 = 12 + 6y
so the correct answer is B
Answer:
<u><em>note:</em></u>
<u><em>solution is attached</em></u>
20 units
Perimeter =add up all sides.
Perimeter = 5+1+5+9
=20 units