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Posted by **Deborah** on Sunday, December 16, 2012 at 8:18pm.

I know how to do hypotenuse but this doesn't seem to work out...help please

- Math Algebra -
**Ms. Sue**, Sunday, December 16, 2012 at 8:22pma^2 + b^2 = c^2

20^2 + b^2 = 30^2

400 + b^2 = 900

b^2 = 500

b = 22.36 = 22.4 cm

- Math Algebra -
**Deborah**, Sunday, December 16, 2012 at 8:23pmSo that doesn't really work then does it Ms. Sue - isn't it supposed to be a even number?

- Math Algebra -
**Ms. Sue**, Sunday, December 16, 2012 at 8:25pmI don't think it's supposed to be an even or whole number. Your directions say to round to the nearest tenth.

- Math Algebra -
**Deborah**, Sunday, December 16, 2012 at 8:35pmThank you Ms. Sue - I understand now... :)

- Math Algebra -
**Ms. Sue**, Sunday, December 16, 2012 at 8:38pmYou're welcome, Deborah. :-)

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