The triangle inequality tells us that the sum of the two shorter sides of a triangle must be greater than the third side.
Here, 21 cm is one of the shorter sides, and x cm must be the length of the other shorter side.
So using the triangle inequality, 21+x > 2x or x<21 cm To the nearest 0.1 cm, the greatest possible length of the longest side (2x) is 2*21-0.1 cm = 41.9 cm < 2x=42 cm.
Answer: since there is no table shown you can’t really tell but the closest would be the number that shows up the most amount of time but you would have to take into consideration of the increase of the number