find the lenght of the letter

Answer:
C) about 6.3 units
Step-by-step explanation:
d= the square root of (x2-x1)^2 + (y2-y1)^2
(-8,-6)
(-2,-4)
d=the square root of (-2-[-8])^2 + (-4-[-6])^2
d=the square root of 36+4
d=the square root of 40
40 is not a perfect square
d=approximately 6.3