Saili plants 4 saplings, in a row, in her garden. The distance between two adjacent saplings is `3/4 m`. Find the distance between the first and the last sapling.

If A and B are the two points. Find the distance between them : .

Find the distance between the point (2,3,6) and (0,0,0).

Find the distance between the points : (2,-1,3) and (- 2,1,3).

The distance between the points (3, 1) and (0, y) is 5. Find y.

Find the distance between the points P(-2, 4, 1) and Q(1, 2, -5).

in a Youing's double slit experiment,bicromatic light of wavelengths 400 nm and 560 nm are used.The distance between the slits is 0.1 mm and the distance between the plane of the slits and screen is 1.0m. the minimum distance between two successive regions of complete darkness is

Find the distance between the points : (1, -3,4) and (- 4, 1, 2) .