= (5−2)2+(6−2)2\sqrt{(5 - 2)^2 + (6 - 2)^2}(5−2)2+(6−2)2
= 32+42\sqrt{3^2 + 4^2}32+42
= 9+16\sqrt{9 + 16}9+16
= 25\sqrt{25}25
= 5 units
