I need help please this is hard and im to tired to do it

CD = 5

Step-by-step explanation:

Using the distance formula

d =

with (x₁, y₁ ) = C (4, 7 ) and (x₂, y₂ ) = D (7, 11 )

CD =

     =

     =

     =

     = 5

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)