Question

A person hears an echo from the top of a tower, 2.2sec after the sound is produced. How far away is the tower from the person? Speed of the sound in air is 332m/sec

Answer 1

GIVEN:
 t=2.2s
 v=332 m/s
 d=?

SOLUTION:
 2d=v*t
 2d= 332*2.2
 2d=730.4
   d=730.4/2
   d=365.2 m

Answer= 365.2m
  

Answer 2

V = 2d/t.[formula]

Given:
V = 332
t = 2.2
d = ?


Solution:

           V = 2d/t
     332   = 2d/2.2
       332 = d/1.1  [division]
 332*1.1 = d  [multiplication]

Final answer = 365.2

                                              Hope it helps...............