Answer:
Its
√
41
Step-by-step explanation: We first need to calculate the difference in x axis and in y axis:
△
x
=
8
−
4
=
4
△
y
=
7
−
2
=
5
Having this values, we now have a triangle rectangle with angles in both points. Now, just apply Pythagoras' formula:
line
2
=
△
x
2
+
△
y
2
line
2
=
4
2
+
5
2
line
=
√
41
