Respuesta :

baabaagreysheep
The formula for the area of a triangle is (base × height)/2. We know that the height is 9, so we can reverse the formula:
(base × 9)/2 = 54
× 2
base × 9 = 108
÷ 9
base = 12

So your answer is 12m. I hope this helps!
The base is 12 meters hope this helps

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