General

import math at the top

I gotta say, Basil sure has a far reaching spectrum of smart people.

Yea..you have to import math first. Otherwise, you can't use that class.

[quote=achyif]basil is not the best place to get help for university-level assignments
I'm sure there are some people here who could help you, but you best run around your dorm trying to find someone who knows python[/quote]

There are plenty of people around Basilmarket who are pretty knowledgeable about a lot of different things.
And it's a quick place to ask about something where it could take some time to track down anyone locally who can answer a question because of the number of people who are here.

@Blackyoshi As the others said, the "math" library isn't built-into the basic Python language, it has to be imported at the beginning of the source code to make the functions in the library available to the rest of the code. The SQRT function is one of those imported functions.
The error message is telling you the math library is missing from your code.

[quote=achyif]basil is not the best place to get help for university-level assignments
I'm sure there are some people here who could help you, but you best run around your dorm trying to find someone who knows python[/quote]

Except I'm a commuter. xD I tried contacting some friends but they haven't replied yet...

http://stackoverflow.com/questions/8783261/python-math-module

The top answer seems to be what you want

Also, "if the function is not a built-in, you have to import the module it is contained in. See python library, and the list of built-ins. - GregS"

call animal control

type "import math" first

basil is not the best place to get help for university-level assignments
I'm sure there are some people here who could help you, but you best run around your dorm trying to find someone who knows python