Answer:
7
Explanation:
There is a theorem that states that: "In any triangle, the sum of any two sides MUST be greater that the third side."
This means that, in the given triangle:
x + 2x > 18
3x > 18
x > 18/3
x > 6
Since x should be greater than 6 for the dimensions to be valid, therefore, the smallest possible integer for x is the one directly after the 6 which is 7.
Hope this helps :)
