Page 473 #7

If $\displaystyle 18\sqrt{18}$=$\displaystyle r\sqrt{t}$, where r and t are positive integers and r>t, which of the following could be the value of rt? I don't get why the answer is 108. Thanks in advance.

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- Sep 19th 2008, 08:42 AMfabxxsquare roots
Page 473 #7

If $\displaystyle 18\sqrt{18}$=$\displaystyle r\sqrt{t}$, where r and t are positive integers and r>t, which of the following could be the value of rt? I don't get why the answer is 108. Thanks in advance. - Sep 19th 2008, 08:54 AMMoo
- Sep 19th 2008, 09:11 AMfabxx
I multiplied and I got 54 sqrt(2) which isn't correct since the correct answer from the book is 108. Why though?

- Sep 19th 2008, 09:15 AMMoo