Math

What is the square root of the number obtained when 196 is multiplied by 4?

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  3. 👁 193
  1. 196 * 4 = 784
    https://www.google.com/search?source=hp&ei=ZxooXI-JGM2IsQXHzoTYBg&q=square+root+784+%3D+&btnK=Google+Search&oq=square+root+784+%3D+&gs_l=psy-ab.3..0i22i30l9.1605.12552..13320...0.0..0.104.1600.17j1....2..0....1..gws-wiz.....0..0j0i131.dSLlZEd1ab0

  2. well, 196 = 14^2
    and 4 = 2^2
    so, √(196*4) = √196 * √4 = 14*2 = 28

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  3. The way the question was worded kind of gives it away.
    The sqrt ( 4 * something) makes you (oobleck in this case) wonder immediately if that something is not a perfect square. It does not take long to figure out it is 14 even if your memory fails beyond 169.

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