help me plz?

Question

Find the length of the following segment created by these pairs of endpoints: (3, 6), (2, 1)
3
1
5
2

Answer 1

The length of the line segment created by the two points (3,6) and (2,1) is found by using the distance formula.

d = sqrt [ (3-2)^2 + (6-1)^2 ]
d = sqrt [ 1^2 + 5^2 ]
d = sqrt [ 1 + 25 ]
d = sqrt(26)

The square root of 26 is close to 5.

Answer 2

3-2=1
1*1=1

6-1=5
5*5=25

1+25=26

d=sqrt(26)