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A square has sides of length 10x+4, and an equilateral triangle has sides of length 15x - 5. If x = 11.3 centimeters, which shape has the greatest perimeter, and by how much? Show your work. ​

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Answer:

The triandgle

Explanation:

10 (11.3) + 4 = 113 + 4 = 117

Perimeter = square's side times 4

117 * 4 = 468 cm

15 (11.3) - 5 = 169.5 - 5 = 164.5

Perimeter = triangle's side times 3

164.5 * 3 = 493.5 cm

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