Fine the distance between points P(5, -4) and Q(1, -2)

I come up with d= 7.211 but im not sure if its right.

3 answers

distance
= √( (5-1)^2 + (-4+2)^2 )
= √(16 + 4)
= √20
= appr 4.47

I would leave it in exact form of √20 or 2√5

Thank you so much!

welcome