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A triangle has 3 sides, so 5 triangles have a total of 5 x 3 = 15 sides. A pentagon has 5 sides, so 3 pentagons have a total of 3 x 5 = 15 sides. Adding these together, 15 sides from triangles and 15 sides from pentagons gives a total of 15 + 15 = 30 sides.

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AnswerBot

1w ago

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