Any Windows calculator would have told you - 28.63564212 is the answer
820 rounded to the nearest hundreds is 800
You can use a calculator to get its decimal value: 28.6356. Or you can simplify it by finding numbers that are factors of 820 that are squares ... 4 x 205 = 820 and so √820 = √4 x √205 = 2√205.
820
It's already there.
Factors refer to whole numbers. The square root of 820 is not a whole number.
Any Windows calculator would have told you - 28.63564212 is the answer
820 rounded to the nearest hundreds is 800
820
820
820 is already rounded to the nearest tens place.
820
You can use a calculator to get its decimal value: 28.6356. Or you can simplify it by finding numbers that are factors of 820 that are squares ... 4 x 205 = 820 and so √820 = √4 x √205 = 2√205.
820
Rounded to the nearest 10, 819 is approximately equal to 820.
820
820