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Which of the following sets of numbers could represent the three sides of a triangle?

{13,27,41}

{8,21,29}

{14,18,34}

{4,16,17}

Which of the following sets of numbers could represent the three sides of a triangle?\newline{13,27,41} \{13,27,41\} \newline{8,21,29} \{8,21,29\} \newline{14,18,34} \{14,18,34\} \newline{4,16,17} \{4,16,17\}

Full solution

Q. Which of the following sets of numbers could represent the three sides of a triangle?\newline{13,27,41} \{13,27,41\} \newline{8,21,29} \{8,21,29\} \newline{14,18,34} \{14,18,34\} \newline{4,16,17} \{4,16,17\}
  1. Recall Triangle Inequality Theorem: Recall the Triangle Inequality Theorem which states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.
  2. Check First Set: Check the first set of numbers {13,27,41}\{13, 27, 41\} to see if they satisfy the Triangle Inequality Theorem.\newlineWe need to check if:\newline13 + 27 > 41,\newline13 + 41 > 27, and\newline27 + 41 > 13.
  3. Perform First Set Calculations: Perform the calculations for the first set.\newline13+27=4013 + 27 = 40, which is not greater than 4141.\newlineThis means that the first set of numbers cannot represent the sides of a triangle.
  4. Check Second Set: Check the second set of numbers {8,21,29}\{8, 21, 29\} to see if they satisfy the Triangle Inequality Theorem.\newlineWe need to check if:\newline8 + 21 > 29,\newline8 + 29 > 21, and\newline21 + 29 > 8.
  5. Perform Second Set Calculations: Perform the calculations for the second set.\newline8+21=298 + 21 = 29, which is not greater than 2929.\newlineThis means that the second set of numbers cannot represent the sides of a triangle.
  6. Check Third Set: Check the third set of numbers {14,18,34}\{14, 18, 34\} to see if they satisfy the Triangle Inequality Theorem.\newlineWe need to check if:\newline14 + 18 > 34,\newline14 + 34 > 18, and\newline18 + 34 > 14.
  7. Perform Third Set Calculations: Perform the calculations for the third set. 14+18=3214 + 18 = 32, which is not greater than 3434. This means that the third set of numbers cannot represent the sides of a triangle.
  8. Check Fourth Set: Check the fourth set of numbers {4,16,17}\{4, 16, 17\} to see if they satisfy the Triangle Inequality Theorem.\newlineWe need to check if:\newline4 + 16 > 17,\newline4 + 17 > 16, and\newline16 + 17 > 4.
  9. Perform Fourth Set Calculations: Perform the calculations for the fourth set.\newline4+16=204 + 16 = 20, which is greater than 1717.\newline4+17=214 + 17 = 21, which is greater than 1616.\newline16+17=3316 + 17 = 33, which is greater than 44.\newlineAll conditions are satisfied, so the fourth set of numbers can represent the sides of a triangle.

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