Assuming you have a relative recent MS Windows operatig system on your computer: Click on "Start" button on the desktop screen
Click on "All Programs" icon
Scroll through the program listing and find "Accessories" program
Click on "Accessories" and scroll through the displayed list and find "Calculator"
Click on "Calculator" to bring up screen with a small calculator image.
Enter the number you want to take the squareroot of, and then hit the "SQRT" button on the calculator image. The displayed number will be the squareroot of your entered number.
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You take square roots out of numbers, and certain physical magnitudes (measurements and the like), not out of objects.
You take square roots from numbers, not from geometric figures.
multiply numbers inside radical together and take square root in this cae , answer is sqrt 14
No. The square root of most numbers is irrational - only if the number of which you take the root happen to be perfect squares, do you get a rational root. In this case, to take the square root of 3/4, 3 is not a perfect square, so the root is not rational. Or you can take .75 to be 75/100; once again, 75 is not a perfect square, so the root is irrational.
That doesn't make any sense. You take square roots of numbers, not of arbitrary objects.