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dpokharnaotzjgn
I think it is D because the triangle is about 12 to 13 and the square below is about 12 too.
musiclover10045

area for triangle = 1/2 x h x b

so 1 triangle = 1/2 x 5.12 x 3.23 = 8.2688 since the triangles are congruent they are equal so 8.2688 x 2 = 16.5376

 round that up to 17

Answer is C 17 square inches