\"\"

\

The curve equation is \"\",

\

The length of the curve \"\" is \"\".

\

The surface area generated by rotating the curve about the \"\"-axis is \"\".

\

\"\"

\

\"\"

\

\"\"

\

Substitute \"\" and \"\".

\

\"\"

\

\"\"

\

\"\".

\

\"\"

\

\"\".