Answer:
20
Step-by-step explanation:
16=1 2/10R + -8
16+8= 12/10R
24=12/10R
R=20
The formula is C = πd
π = pie
d= diameter
C =circumference
D
30.20 * 15% (or 0.15) = 4.53
4.53 is about 4.50