Formula for Square Root is invalid? See screen shot (Ive also tried it without)

[Anonymous]

[ToanDN]

=sqrt(param)

[barthbradley]

You don't need the colons (:).  

[Anonymous]

Sad to say, that was the first try. Same err message. For some reason my
REVIT 2019 doesn't seem to like the "sqrt"

[barthbradley]

Mine likes it fine. What's your formula? 

FYI: Your screenshot tells us that Revit sees a  "sqrt:" someplace, somewhere.  It's just repeating the characters you typed.  

[ToanDN]

My screenshot is from Revit 2019. What is the context of your formula: family, schedule, type of the parameter you are trying to squareroot from?

[barthbradley]

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@Anonymous wrote:
Sad to say, that was the first try. Same err message. For some reason my
REVIT 2019 doesn't seem to like the "sqrt"

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Geez louise @Anonymous; you're right!!!  This might be the beginning of a epidemic!!! 

...kidding. Just checking back in and wondering what's up.  

[Anonymous]

Still doesn't work 😞

[barthbradley]

Weird.  What error message are you getting now?  Same one?  And didn't type in the colon (:)?  

What's the exact formula you are typing?  

[Anonymous]

sqrt((length*length)+height*height)) - easy as pie Pythagorean. Simple as
it may seem, TVs are sold by 9/16 ratio are sold by diagonal length. A
simple (to me) parametric formula to "size" for various and future TV
diagonals.

Is there a better way? I'm all ears.

[barthbradley · Accepted solution]

What about: sqrt ( ( ( (length*length) +height) *height ) ) 

wouldn't it be: sqrt(length^2+height^2)

[Anonymous · Accepted solution]

Sorry, miss-typed the formula I used:  sqrt((length*length)+(height*height))

[barthbradley]

That was it???

I guess I didn't help you get there. bummer.  

[AFatRat]

I made the same thing a while back except it sounds like I did it from the other direction. This way the size drives the height and width. Just throwing out another way to go about it.