Posted by **Quinisha** on Tuesday, May 26, 2009 at 1:24pm.

What are the dimensions of the smallest square that you can make using 18-in. by 24-in. rectangular tiles?

A. 36-in. by 36-in.

B. 144-in. by 144-in.

C. 60-in. by 60-in.

D. 72-in. by 72-in.

- Algebra 2 -
**Reiny**, Tuesday, May 26, 2009 at 1:32pm
This is like finding the LCM for 18 and 24 which would be 72

so the smallest square is 72 by 72

you would need 12 tiles, laid out in 3 rows and 4 columns, each row 24 inches and each column 18 inches

- Algebra 2 -
**Quinisha**, Tuesday, May 26, 2009 at 1:36pm
Thanks so much!!! I never understood how to do this, now I do :)

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