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October 21, 2014

October 21, 2014

Posted by **Edna** on Friday, November 30, 2012 at 11:50am.

Ans. 7 ft.

Book's explanation: 〖25〗^2-〖24〗^2=625-576=49=7

Where did they get 24 from? Thank you for your help!

- math -
**Steve**, Friday, November 30, 2012 at 1:02pmI can't picture the deck. Top? Bottom?

All I can say is that 24 = 28-4, the difference between top and bottom.

But the 7^2+24^2=25^2 seems to be for the legs and diagonal of a triangle. Oh, well, maybe you have a diagram in front of you.

- math -
**Edna**, Friday, November 30, 2012 at 4:25pmNew tile is being laid on a floor that is 12 ft. long and 9 ft. wide. Each square tile measures 9 inches on each side. How many tiles will be needed?

Ans. 192

Please tell me how they got 192

Thank you.

PS digressing

how do I sent you diagrams, i.g., triangle diagram of a deck?

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