We made a shady deal with the math teacher you yelled "When will I ever need to know this?!" at back in grade school.
The square root of five is 2.236 (i.e. 2.236 x 2.236 = 5). The statement in the exercise is correct.
Nah, that'd be two point something something. The square is the inverse of the square root. The square of 5 is 5*5=25 In turn, 5 is the square root of 25
The voice-recognizing engine is working very bad. Still, after so many complaints. I hope this comment helps. Have a nice day.
Unfortunately, we cannot do anything about the voice recognition; it's third-party software.
Could I say: Five squared is twenty-five? Is there an equivalent of that in Norwegian?
You would have to use the verb å kvadrere rather than the noun, so here it would be "fem kvadrerte er tjuefem".
No, I don't think so - to my knowledge å kvadrere is only used in maths. If you're talking about baking things that you might make square, you use the term 'firkant', as in the name for the shape. So in a recipe you might see "lage firkantet" or "gir firkantet form" - I'm no good at DIY, though, so I don't know if that's how you'd talk about it in woodworking, sorry! Hopefully one of the mods can help :)
I don't think we have a more general verb for this, and would use some combination of a verb and "firkant" or "firkantet" like beerzoe mentioned.