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waheguru

  • one year ago

The lenght from the center of teh circle to a point on the circle is r = square root of 40 what is the length of the radius the answer is 2 and squareroot 10?

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  1. wio
    • one year ago
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    \[ \sqrt{40} = \sqrt{4}\times\sqrt{10}=2\sqrt{10} \]

  2. waheguru
    • one year ago
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    oh THANK YOU

  3. waheguru
    • one year ago
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    :)

  4. waheguru
    • one year ago
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    but the first number has to be a perfec square right?

  5. wio
    • one year ago
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    Yes

  6. wio
    • one year ago
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    You can pull out any perfect squares.

  7. wio
    • one year ago
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    Since \(40=2\cdot 2\cdot 2\cdot 5\) you can pull out the \(2\cdot 2\), and he \(2\cdot 5\) remains inside.

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