Respuesta :

Answer:

12 ft.

Step-by-step explanation:

Since the area is already calculated, we have to work backwards.

We first multiply the area by 2 to reverse the multiplication with 1/2.

72x2=144

next we divide by the base to reverse (b)(h)

144/12=12

Now we plug it in: 12x12=144

144/2=72

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