Square root of squares of two distances. (Triangle ineqality for such metric.)
9775
Metric on Cartesian Product
1190
Square Root of Rational Number $\frac{A}{B}$
158276
Inequality problem involving square roots
142768
Approximation of $\sqrt{2}$
133514
What is a radius on a square grid?
83119
Compass-and-straightedge construction of the square root of a given line?
33427
Why is Euclidean distance not a good metric in high dimensions?
15003
Pythagorean Quadruples:
42581
Simple algebra square root inequality
155423
lower triangle inequality for complex numbers
126040
Geometric explanation of $\sqrt 2 + \sqrt 3 \approx \pi$
144042
On the functional square root of $x^2+1$
64741
The square root of positive definite matrix
144244
Bound on difference between irrational square root and rational number
79777
An olympiad Geometry problem involving triangles
115454
Primality test bound: square root of n
86603
Infinite square-rooting