2.625 is 21/8 into a decimal
6n+1 = 25
subtract 1 from each side
6n+1-1 = 25-1
6n = 24
divide each side by 6
6n/6 = 24/6
n =4
The formula for finding the area of a cone is pi times the radius squared times the height/3. Since we already have the base area, all we need to do is find the height over 3. The height is 6, so 6/3=2. Then 4 pi times 2=8 pi.
The answer is 8pi.
I hope this helps you
6/8=6.6/8.6=36/48
36/34=6.6/2.17=18/17 wrong