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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
 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
 one year ago

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

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

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

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