Question

May You Please Help Me? :(

In triangle ABC, the length of side AB is 11 inches and the length of side BC is 18 inches. Which of the following could be the length of side AC?
1. 5 inches
2. 31 Inches
3. 34 inches
4. 19 inches

Answer 1

Option 3 “34 inches” is the answer because the sum of two sides of the triangle must be greater than the third side. If this rule is not obeyed then the third side will not complete the triangle and it will be not be joined.
11+18<34 true
11+34<18 true
18+34<11 true
Therefore this is a complete triangle.
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