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Answer :

Answer:

answer: 18

Step-by-step explanation:

Hello to find area in triangle you just have to do...

base × height ÷ 2 = area So our base is 3 and our height is 12 so 3 × 12 = 36 then 36 ÷ 2 = 18 Hope that helps!

It could be 36 cause length times width equal the area

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