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Ahh why am i so bad at math please help me​

Ahh why am i so bad at math please help me​-example-1

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Answer:

A

Explanation:

The larger and smaller right angled triangles in the diagram are similar with linear scale factor 2. The area of the smaller white triangle is 1/2(3)(4) = 6.

The area scale factor = 2² = 4, so the area of the larger triangle is 4(6) = 24.

Hence the shaded area = 24 - 6 = 18.

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