Question

Find the length of AD in the figure.

Answer 1

`√(122)` units

Explanation:

To find the distance between points A(1,3) and D(2,-8), we can use the distance formula:

distance =
`√((x2 - x1)^2 + (y2 - y1)^2)`

Plugging in the coordinates, we get:

distance =
`√((2 - 1)^2 + (-8 - 3)^2)`

distance =
`√(1^2 + (-11)^2)`

distance =
`√(122)`

Therefore, the distance between points A(1,3) and D(2,-8) is
`√(122)` units.