Question

What is the approximate distance between points (-7,2) and (11, -5)?

Answer 1

19.3(approx)

Explanation:

we know distance between A(x1,y1) and B(x2,y2) is`sqrt[(x2-x1)^2 + (y2-y1)^2]`.
hence distance between (-7,2), (11, -5) is `sqrt[{11-(-7)}^2 +{(-5)-2}^2]`
= `sqrt[{11+7}^2 +{-5-2}^2]`
= `sqrt[18^2+7^2]`
= `sqrt[324+49] = sqrt373` = 19.3 (approx)