Answer:
Explanation:
If you don't want to use a calculator, then you must know your square roots
The first step is to think, "what is the closest number to 62, that when squared rooted, it would be a whole number?"
The closest numbers would be 49 (square root is 7)and 64 (square root is 8). But 64 is wayyy closer so by knowing the square root, you can work your way down to solve.
So you know that the square will inevitably be a decimal, and that the whole number will have to be 7 ( it can't be 8 because then it'll be higher than 64) and the decimal would have to be really high, like in between 5 and 9 bc 62 and 64 are really close.
Now this is just an estimate is it doesn't have to be exact. but I'm guessing the root would be around 7.8ish (rounded to nearest tenth)
but you can have a different answer, maybe closer :)
** if anything didn't make sense pls tell me !