12:8 can also be written as

To find the percent you have to do 12÷8 and that equals 1.5, then you have to do 1.5×100 and that equals 150. The ratio, 12:8 as a percent is 150%
The New York museum attracted 6,274,289, while the Chicago museum attracted 5,772,857.
Round to the nearest million. Note that if the number in the hundred-thousands place value is 5 or greater, round up. If it is 4 or less, round down.
6,274,289 => 6,000,000
5,772,857 => 6,000,000
Combine the two terms
6,000,000 + 6,000,000 = 12,000,000
a) 12,000,000 is your answer
hope this helps
Well you technically need 3 dimensions and know the shape of the pool if you gave me that i could help you!!<span />