Find the distance between the following pair of points :

(0, 0), (36, 15)

By distance formula,

d = $\sqrt{(x$2 - x1)^2 + (y2 - y1)^2}

Let P(x₁, y₁) and Q(x₂, y₂) be the given points

Co-ordinates of P = (0, 0)

Co-ordinates of Q = (36, 15)

$PQ = \sqrt{(36 - 0)^2 + (15 - 0)^2} \\[1em] = \sqrt{36^2 + 15^2} \\[1em] = \sqrt{1296 + 225}\\[1em] = \sqrt{1521} \\[1em] = 39.$

Hence, distance between (0, 0) and (36, 15) = 39 units.