Answer:
The cliff is 5916.75 m far
Explanation:
Echo: This is a sound heard after the reflection of sound wave from a plane surface.
v = 2x/t........................... Equation 1
making x the subject of the equation above,
x = vt/2........................... Equation 2
Where v = speed of sound in air, x = distance of the cliff, t = time to produce an echo
Given: t = 34.50 s,
Constant: v = 343 m/s
Substituting these values into equation 2,
x = 343×34.5/2
x = 5916.75 m.
Thus the cliff is 5916.75 m far
