physics
posted by Constant physics poster! .
I found out how I was messing up and getting the wrong answer. I entered (30) squared + 49.5 squared then took the square root of the answer getting 39.37 instead of 57.88 which i figured out was the right answer, I didn't enter all in my calc at the same time. ...whoops. Thanks for all your help mathmate!

You're very welcome!
Context:
http://www.jiskha.com/display.cgi?id=1253571803