Question

The distance between the points (a, b) and (b, a) is:

1. 2v(a2+b2 )
2. v(a2+b2 )
3. v(2(a2+b2 )
4. None of these

Answer 1

Let point A(a,b) and B(b,a) is two points.
Therefore,
Distance between point A to B is written as,
AB² = (X2-X1)+(Y2-Y1)

THEREFORE,
OPTION (D) is right answer