SOLUTION: What is the greatest possible value of the perimeter of a triangle when 1 side has a measurement of 5, another is 8 and the 3rd is missing?

Question 439871: What is the greatest possible value of the perimeter of a triangle when 1 side has a measurement of 5, another is 8 and the 3rd is missing?

Found 2 solutions by MathLover1, richard1234:
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
the perimeter of a triangle is
1 side has a measurement of , another is and the 3rd is

the 3rd side has to be
greater than (8 - 5) and less than (8 + 5)
and
the answer: the greatest possible value of the perimeter of a triangle will be if

Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
The third side has to be greater than 3 and less than 13.

The other tutor let c = 12, since 12 is the integer less than 13. However, c can be 12.9, or 12.99999... as long as it is less than 13. The largest possible value of the perimeter is roughly 5 + 8 + 13, or 26 (infinitesimally smaller than 26).
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