TO find the mean of a group of numbers you simply find the average. To do that, just simply add up all the numbers, then divide by how many numbers there are. So when you add up all of those numbers you get to a sum of: 800 Then divide by the totaly amount of numbers which is 11, so 800 divided by 11 equals: The mean for those set of numbers is: 72.7272 reapeating so... 72.72 (with a little line over the digits on the right side of the decimal)
So the formula for a volume of a sphere is 4/3 times pi times the radius cubed. step one: 4/3 times 3.14 = 4.18666666667 Step two: then you cube 8.5 and get 592.45 the final answer is 2,480.3906
