Let `C` be the curve ` y = 8 sqrt( x ) ` for `1 le x le 3.2`.
Graphing window shows horizontal axis: 1 to 4, vertical axis: 0 to 16. Dot at (1,8), color blue. Dot at (3.2,14.310835055999), color blue. Start Graph, Color black

x	y
1	8
2	11.314
3	13.856
4	16

Find the surface area of revolution about the `x`-axis of `C`.

Surface area `= int_1^3.2 f( x ) \ dx` where
`f( x ) =`  
Now integrate to find surface area `= int_1^3.2 f( x ) \ dx =`