It is 340.29 m / s or 341 m / s.This is the speed of sound in air. Hope it helps and pls mark as the best answer. :-)
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The speed of sound is the distance traveled per unit time by a sound wave propagating through an elastic medium. In dry air at 20 °C, the speed of sound is 343.2 meters per second. 

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plss mark it as brainliest answer