Im confused on how to use distance formula on this

Answer:
Not sure what you need ----see below
Step-by-step explanation:
Leg 1 of left triangle = 8 units
Leg 2 = 6
Hypotenuse = 10 ( via Pythag theorem....or distance formula)
R triangle Leg1 = 8 units
leg 2 = 6 units
hypotenuse = 10 units so the triangles are congruent by SSS
distance from right angle of triangle 1 ( at 0,0) to
right angle of triangle 2 ( at 6,-3)
using distance formula
from 0,0 to 6, -3
d^2 = ( 6-0)^2 + (-3 -0)^2
d^2 = 45
d = sqrt 45