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- Thread starter SaeLk
- Start date

- Joined
- Feb 4, 2004

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- 15,946

If you've done the exercise, then please show your work. We'll be glad to check to see if you did this correctly.SaeLk said:Can somebody else than Eliz be more willing to show some work so I can see if i did it correctly.

Note: Since you used some method other than the Pythagorean Theorem (or, which is the same thing, the Distance Formula), please state what method you used when you reply.

Thank you.

Eliz.

a^2 + b^2 = d ?

d = 193.25 or d = 13.901.....

72.25 + 121 = 193.25

This method I used to get the answer.

but my first one was 11 in - 8.5 in. = 2.5 in

then 11 + 2.5 = 13.5 in was my answer.

I'm not sure which answer is the correct one. or even if i have a correct answer.

The math gurus like to see:

let d = diagonal; then:

d^2 = 8.5^2 + 11^2

d^2 = 72.25 + 121

d^2 = 193.25

d = sqrt(193.25)

d = ~13.90143....

d = 13.9 (nearest 10th)

Now take a sheet of 8.5 by 11, draw the diagonal,

then measure it with your ruler: 13.9 looks good ? :idea:

And if you CUT along the diagonal, you're left with 2 triangles,

same size and with right angle, right?