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3 radical 5
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\[3\sqrt{5}\]
Yes but what is it squared
Well, what is 3 squared?
9
and what is this: \[\sqrt{5}\sqrt{5}\]
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5
And what is 9 x 5?
45
Well then \[(3\sqrt{5})^2=3^2(\sqrt{5})^2=9(5)=45\]
So let's say 3 rad 5 was the radius 45 would be the diameter
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To find the diameter, you should multiply the radius by 2 NOT square it
\[2\times 3\sqrt{5}=(2\times3)\sqrt{5}=6\sqrt{5}\]
Oh okay that makes more sense thanks so so much
Oh I actually have one more question
What is it?
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