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# What is the area of a parallelogram with an angle 45

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Senior Manager
Joined: 07 Jul 2005
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What is the area of a parallelogram with an angle 45 [#permalink]

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23 Jun 2006, 16:56
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What is the area of a parallelogram with an angle 45 degrees, height 4 cm and a diagonal 5 cm?

Can you please tell me if questions like these would come in GMAT?
Intern
Joined: 05 Apr 2006
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24 Jun 2006, 09:38
28

the parrallelogram abcd . with bd = 5
by pyhtagoras ab = ae + eb . e is the point where perpendicular from c intersects ab. ae = 4 as the angle is 45 . eb = (5^2-4^2)^.5 = 3
so ab 4+ 3 = 7 .

area 7*4 = 28
Director
Joined: 06 May 2006
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24 Jun 2006, 09:48
Yup - 28.

No reason why this should not appear on a gmat...
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24 Jun 2006, 09:48
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# What is the area of a parallelogram with an angle 45

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