Math Is Fun Forum

waven

Member

Registered: 2009-10-06

Posts: 11

Pythagoris's theorem and its converse

hi,

i tried working with the question using this method

but its nowhere close to the answer, which is √130. Thanks!

Last edited by waven (2010-01-31 12:05:13)

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,893

Re: Pythagoris's theorem and its converse

Hi waven,

There are a couple of errors. Using your drawing:

1. DC = the diameter BC minus BD......to which your answer 6 is incorrect.

2. Your solution finds AD, instead of AC as per the problem wording.

The answer that you were given (AC = √130) is correct.

Last edited by phrontister (2010-01-31 20:25:18)

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"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Pythagoris's theorem and its converse

Hi waven;

Phrontister is correct, AC is equal to the √(130)

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.