Answer:
Explanation:
An echo is created by a sound wave hitting something and bouncing back.
So the echo travels twice the distance of the width of the canyon. I think the easiest way is to cut the time in half, if you understand what I wrote before this sentence
Formula
d = r * t
Givens
d = ?
r = 335 m/s
t = 6.4 seconds /2
t = 3.2 seconds
Solution
d = r * t
d = 335 m/s * 3.2 seconds
d = 1072 meters across.
