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The square root of 2 is
1.4142135623730950488016887242096980785696718753769480731766797379907324784621
Ans. 2 The square root of 2 is irrational; that means that it can not be expressed by a fraction,. Any decimal that terminates or repeats is a fraction; this means that an attempt to express root 2 by a decimal can never be exact.
For most everyday purposes people use 1.414 when they need an approximation. The decimal given above is a much closer approximation, but still not exact.
Note. The qn says what is sqrt-2 ?. Both answerers have assumed that the questioner meant sqrt(2), or 21/2.
If the qn really was "what is ( -2) 1/2 ", everything above should be multiplied by i. i is the square root of -1, a so-called imaginary number.
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What is cosecant of -405?
-sqrt2
How do you rationalize 4 with square root if 2?
4=(sqrt2)4
How do you find perimeter of a square inscribes in a circle?
one side of the square inscribed in a circle of radius r is sqrt2 * r (the square root of two times the radius) So the perimeter is 4 * sqrt2 * r
What is the area of a regular octagon with side length of 10?
It is about 482.84 square units.A= 2(1 + sqrt2)S²For S = 10A = (2 + 2sqrt2) 100A = 200 + 200 (sqrt2)A = 200 + 282.84 = 482.84
What is the area of a regular octagon with a side length of 5?
It is about 120.71 square units.A= 2(1 + sqrt2)S²For S = 5A = (2 + 2sqrt2) 25A = 50 + 50 (sqrt2)A = 50 + 70.71 = 120.71
