The answer is 8.1
It is: 9.1
It's 125.1 (rounded to the nearest 10th).
To the nearest tenth - it's 3.5
This is simply done by entering 21 into the calculator, and hitting the square root sign. This answer, rounded to the nearest tenth is 4.6.
32.000
15.0
42.0
The square root of 18, rounded to the nearest integer, is 4.
46.0
1000.0
499.0