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TRIANGLES....GEOMETRY

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by antyagi » Sat Jul 12, 2008 9:15 am
IMO (B).

The area of the triangle remains same so 1/2 * 3 * 4 = 1/2 * 5 * x
where x = PR

Hence PR = 12/5
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Ankur Tyagi
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by dbart06 » Sat Jul 12, 2008 9:20 am
Where did you get the 5 on the second half of equation?
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by antyagi » Sat Jul 12, 2008 9:22 am
SQ is the hypotenuse of the rt. triangle PQS and from pythogerous theorm it's 5.
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by dbart06 » Sat Jul 12, 2008 9:25 am
Thanks,

I saw my mistake as to why I couldn't fiqure it out.
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12/5

by hakyology » Sat Jul 12, 2008 11:54 am
make sure you know the greek guy's formula. pythagoras?
then you know that QS is 5 (3-4-5)
and then you can see the jackpot.

3 times 4 times 1/2 = 5 times PR times 1/2

therefore PR is 12/5
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