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 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?
 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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wio
 one year ago
Best ResponseYou've already chosen the best response.0\[ \sqrt{40} = \sqrt{4}\times\sqrt{10}=2\sqrt{10} \]

waheguru
 one year ago
Best ResponseYou've already chosen the best response.0but the first number has to be a perfec square right?

wio
 one year ago
Best ResponseYou've already chosen the best response.0You can pull out any perfect squares.

wio
 one year ago
Best ResponseYou've already chosen the best response.0Since \(40=2\cdot 2\cdot 2\cdot 5\) you can pull out the \(2\cdot 2\), and he \(2\cdot 5\) remains inside.
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