Question

What is the distance between `(8, 2)` and # (-6,7) #?

Answer 1

`"The distance is " sqrt 221 " units"`.

Explanation:

distance between `A(x_1, y_1) and (x_2, y_2)` on xy plane:

`d = sqrt((x_1-x_2)^2 + (y_1-y_2)^2) = sqrt((x_2-x_1)^2 + (y_2-y_1)^2)`

`d = sqrt ((8 - (-6))^2 + (2 - 7)^2)`

`d = sqrt 221`