The first one should be correct.
The answer is 19.9 centimeters. Hope this helps!!!
The percentile associated with the mean must be high than 50%
Answer:
m = 2
Step-by-step explanation:

Hope this helps.
Sin(angle) = opposite leg / hypotenuse
Sin(45) = Opposite leg / 28
Opposite Leg = 28 * Sin(45)
Opposite Leg = 14 SQRT(2) = 19.8