The two square roots of 4,900 are +70 and -70 .
70 x 70 = 4,900
(-70) x (-70) = 4,900
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The square root of 4900 is 70
The square root of a number is that number which, when squared, gives you the given number. For example, the square root of 25 is 5, since if you square 5, you get 25. It is the "inverse function" (that is, in a way it's the opposite) of squaring.
For a square, the length of each side is equal to the square root of the area. In this case, the square root of 36 is 6. So, each side measures six units.
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