Answer:
ITS 40
Step-by-step explanation:its 8 because 8x5 is 40:5 10 15 20 25 30 35 40
C=31.41592654
Step-by-step explanation:
C=2πr
r=5
C=2π(5)
Therefore C= 10π or C=31.41592654
Im confused what are u supposed to do ?