Answer
d= 10
Work Step by Step
We replace $x_{1}$and $y_{1}$ by the coordinates of C and $x_{2}$ and $y_{2}$by the coordinates of D.
$d=\sqrt{ (x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}=\sqrt{ (0-(-6))^{2}+(9-1)^{2}}=\sqrt{36+64}=\sqrt{100} = 10$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.