Answer:
C=31.41592654
Step-by-step explanation:
C=2πr
r=5
C=2π(5)
Therefore C= 10π or C=31.41592654
0.4 grams or 0.40 grams however you like writing decimals, but either way they are both the same.
I think the answer is B because that is the only answer that could make sense.
Hello!
I believe the correct answer is -4/15.
Hope this helps! ☺♥