Answer:
0.68?
Step-by-step explanation:
I am not from English speaking country so I am not sure about the first sentence but the second
126n = 86 | /126
n = 86/126
n ≈ 0,68
X - the percent of increase

The percent of increase is approximately 23.8%.
Answer:
9.2
Step-by-step explanation:
A cylinder is 12 feet high has a diameter of 10 feet in cubic feet