Respuesta :

Answer:

6

Step-by-step explanation:

a=bh/2

12=4b/2, simplify = 12=2b/1

divide 2 to both sides

12=2b

6=b

Answer:

6 is the base

Step-by-step explanation:

to find the base, you do

b = 2 × A/h

b = 2 × 12/4 = 6

A = Area = 12

h = height = 4

b = base = 6

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