The area of any circle is equal to

, where r is the radius.
We know that the diameter is 12. The radius is always half of the diameter, so the radius of our circle must be 6.
Substitute 6 for r in our equation and simplify.
π6² = π6×6 =
36π in²
Answer:
9.5
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
8 x 2 = 16
4 x 2 = 8