College Math CLEP Prep Practice Exam

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Which of the following is thePerimeter of a triangle with sides of length 3, 5, and 7?

  1. 6

  2. 8

  3. 15

  4. 20

The correct answer is: 20

The perimeter of a triangle is the sum of all its sides. In this case, the perimeter would be 3 + 5 + 7, which equals 15. Therefore, options A, B, and C are incorrect since they do not follow the formula for finding the perimeter of a triangle. Option A is the sum of the two smaller sides, option B is the sum of the two longer sides, and option C is the sum of all three sides squared. The correct formula is to simply add all three side lengths, giving a perimeter of 15.

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