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MATH

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Radio waves ina vacuum travel a distance equal to seven times the circumference of earth in 1 s. If the radius of Earth is 6 318 138.7m, what is the speed of the radio waves in kilometres per hour?

  • MATH -

    C = 2πr

    Mutliply that value by 7 and convert to Km/hour

    6,318,138.7m = 6,318.1387Km

    3600 seconds = 1 hour

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