Question

Find the distance between (21, 5) & (28, -1).

Answer 1

`√(85)`

Explanation:

we have the equation of distance between two points :

d=
`√((x2-x1)^2+(y2-y1)^2)`

first point (21,5)

second point (28,-1)

so we have

d=
`√((28-21)^2+(-1-5)^2)`

d=
`√((7)^2+(-6)^2)`

d=
`√(49+36)`

d=
`√(85)`

so we have

d=
`√(85)`