Answer:
17/50
Step-by-step explanation:
P(red or purple) = number of red or purple / total
There are 7 red rings and 10 purple rings
= (7+10) / 50
= 17/50
Rational number
Hope this helps
r = C/(2π)
C = 2πr
Divide both sides by 2π
C/(2π) = r
6 1/6