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31 December, 14:45

Find the total surface area of this triangular prism. 13 cm 15 cm 12 cm 20 cm 5 cm 9 cm

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  1. 31 December, 15:05
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    Step-by-step explanation:

    first calculate the area of the two triangles and add them up ... calculate the area of the three rectangles on each side add them up ... finally add the sum of the rectangles together with the triangle
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