Hal's math

[Holllywood]

I've checked Hal's Help on the net (No Joy). How would I phrase the question, to ask Hal the Square, Cubed or any Root of a number? He knows that (25)means "The Square root of 25. But He won't tell you that the answer is 5. I've tried typing the question, "What is"?; "How much is"?; with no luck in getting Hal to provide the solution.
Any suggestions?

Thanks

[Dr.Benway]

You could ask him to "run calc" or would that be to easy?

[Art]

Hal can do pretty complex math.
Try typing:
sqr(256) ENTER
Hal should reply 16.
Most math symbols work fine.
Hope this helps you.

[Holllywood]

Thanks to all, Tried that Art. Thank you I'm in business, It worked.