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Kabir says: "5 cm, 7 cm, 11 cm make a triangle, so 10 cm, 14 cm, 22 cm also make one." Is he right?

Class 7Triangle InequalityTriangles
  • AYes, but only for right triangles
  • BNo, 10 + 14 < 22
  • CYes, doubling keeps every sum bigger
  • DNo, doubling never works

Step-by-Step Solution

5 + 7 = 12 > 11. Doubling: 10 + 14 = 24 > 22. If then , so the doubled set works too.
Answer: C) Yes, doubling keeps every sum bigger

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