Mathematics
Grade9
Easy

Question

If one side of a triangle is 10 cm and another side is 6 cm. Find the possible length of the third side, if the third side is the longer side.

  1. 10 < x < 16
  2. 4 < x < 16
  3. 11< x < 16
  4. 5 < x < 16

hintHint:

We know that according to triangle inequality theorem, In a triangle the sum of two sides should be greater than the third side. So using this the third side should be less than the sum of other two sides also mentioned that the third side is the longest so it should be greater than 10cm.

The correct answer is: 10 < x < 16


    We know that according to triangle inequality theorem, In a triangle the sum of two sides should be greater than the third side.
    Given , two sides are 10cm and 6 cm.
    Let the third side be x.
    we know that the sum of given two sides should be greater than the third side.
    So, 10 + 6 > x
    16 > x
    x < 16
    Also, 6 + x > 10         and, 10+xgreater than6
    x > 4
    As APQ, x is the longer side, So, x-value can be greater than 11 and less than 16.

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