Respuesta :

musiclover10045

Area of one face = 1/2 x base x height = 1/2 x 5 x 3 = 7.5 square inches.


there are 3 of those faces : 7.5 x 3 = 22.5 square inches.


the bottom triangle = 1/2 x 5 x 4.3 = 10.75 square inches


total surface area = 22.5 + 10.75 = 33.25 square inches

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