Answer:
Step-by-step explanation:
7b(344/4b)=602
4 balls = 344
7 balls = 7×344/4= 602
3150
2325/155,000 = 0.015 = 1.5%
210,000 x 1.5% = 210,000 x 0.015 = 3150
216 / 18 = 12 feet
increase by 12