Enable text based alternatives for graph display and drawing entry

Try Another Version of This Question

Question 1
Let `C` be the curve ` y = 2 sqrt( x ) ` for `1.1 le x le 4.9`.

Find the surface area of revolution about the `x`-axis of `C`.
3dsurface
Surface area `= int_1.1^4.9 f( x ) \ dx` where
`f( x ) =`  
Now integrate to find surface area `= int_1.1^4.9 f( x ) \ dx =`