Answer:
(14n - 42)*pi
Step-by-step explanation:
Circumference is 2 * pi * r. Since r in this case is 7n - 21, you can multiply r by 2 and pi, giving you (14n - 42)*pi
<span>(3)(8) = (8)(3)
answer is </span><span>A. Commutative</span>
Answer: :(
Step-by-step explanation: you said 20
2(-11)-19
-22-19
-41
D is the answer
Answer:
7(3^2) + 2(3).
That equals to 7(9) + 2(3).
That equals to 63 + 6.
That finally equals to 69.
Step-by-step explanation:
