Can someone check my work. Im sure its wrong but i dont know where. Thanks
Did you treat $\displaystyle (\frac{\pi}{2})^2+(9\pi)^2$ as $\displaystyle \frac{\pi^2}{2}+9\pi^2$
edit. making the above mistake and also having your calculator set to degrees gets a similar answer to what you got. It's hard to tell how you get from the 3rd last line to the 2nd last line.