Hello, thank you for taking the time to post your question!
The formula for the horizontal range that you want to use here is
x = v0 * cos(theta) * t, where
v0 is the initial velocity
theta is the launch angle
t is the total time of flight
from the information given we know that theta = 30 degrees and t = 25 seconds, but did it provide any more context about the initial velocity as part of the question? If we have that value we can compute what it’s after in the question.
Hopefully that gets you moving in the right direction! Feel free to reach out with a message if you have any questions beyond that! :)
