1. 3 cm < AC < 27 cm 
  2. AC < 3 cm 
  3. AC > 27 cm 
  4. AC = 27 cm 
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1 Answers

Option 1 : 3 cm < AC < 27 cm 

Given: 

In a triangle ABC, AB = 12 cm and BC = 15 cm

Concept used: 

When two side are given then third side lies between difference of these two sides and sum of these two sides.

Calculation:

In a triangle ABC, AB = 12 cm and BC = 15 cm

Two side are given, then third side lies between

⇒ 15 - 12 <  AC < 15 + 12

⇒ 3 < AC < 27

∴ Option 1 is correct.

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