A man stands between two high rise buildings and blows a whistle. He hears two successive echoes after 0.4 s and 1.6 s. Calculate the distance between buildings. [Take, speed of sound = 332 ms–1]
Distance of person from nearer building, d1 = 
Distance of person from farther building, d2 = 
Total distance between buildings. = d1 + d2 = 66.4 + 265.6 = 332 m