If s = 1 over 2 unit and A = 12s2, what is the value of A, in square units? ____ square unit(s). (Input whole number only.)

 For this case we have the following expression:
 [tex]A = 12s ^ 2 [/tex]
 Where, the value of s is given by:
 [tex]s = 1/2 [/tex]
 So, replacing values we have:
 [tex]A = 12 (1/2) ^ 2 [/tex]
 Rewriting we have:
 [tex]A = 12 (1/4) A = 12/4 A = 3 units ^ 2[/tex]
 Answer:
 the value of A, in square units is:
 3 square units