Find the length of the segment with endpoints A(4,12) and B(7,16) ?

Ineed if you could explain and give me the answer you! this needs done

Zack notices that segment nm and segment pq are congruent in the image below: which step could him determine if δnmo ≅δpqr by sas? (5 points) segment mo ≅ segment qr segment on ≅ segment qp ∠ n ≅ ∠ r ∠ o ≅ ∠ q

8.74 rounded to the nearest whole number