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24 April, 07:58

The perimeters of four triangles are as follows: 3, 9, 27, 81.

What would be the perimeter of a fifth triangle that follows the pattern?

A. 87

B. 100

C. 135

D. 243

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Answers (1)
  1. 24 April, 08:03
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    The correct answer would be D.

    Explanation: Each time, the number is multiplied by 3

    (3*3=9, 9*3=27, 27*3=81, 81 * 3=243)

    So therefore 243 would be the perimeter of the fifth triangle.
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