What is the length of stack J K with bar on top? Round to the nearest tenth of a unit.

A.

4.5 units

B.

5.4 units

C.

6.0 units

D.

12.8 units

Hello there.

What is the length of stack J K with bar on top? Round to the nearest tenth of a unit.

A.

4.5 units

For the answer to the question above,

stance formula : d = sqrt (x2 - x1) ^2 + (y2 - y1) ^2

(3,5) (7,3)

d = sqrt (7 - 3) ^2 + (3 - 5) ^2

d = sqrt 4^2 + (-2^2)

d = sqrt 16 + 4

d = sqrt 20

d = 4.47

when rounded = 4.5

So the answer to your question is the first one among the choices which is a. 4.5