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Two sides of a triangle are 9 cm and 5 cm. Between which values must its perimeter lie?

Class 7Triangle InequalityTriangles
  • ABetween 18 cm and 23 cm
  • BBetween 14 cm and 28 cm
  • CBetween 18 cm and 28 cm
  • DBetween 4 cm and 14 cm

Step-by-Step Solution

Third side lies between 4 cm and 14 cm. Perimeter = 14 + third side, so it lies between 14 + 4 = 18 cm and 14 + 14 = 28 cm.
Answer: C) Between 18 cm and 28 cm

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