Princeton CAT : Data sufficiency : Geometry

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amandeep.hora: Senior | Next Rank: 100 Posts; Posts: 31; Joined: Sun Jul 12, 2009 10:11 am; Thanked: 1 times

by amandeep.hora » Thu Jun 30, 2011 11:30 am

In the figure above, what is the area of triangle ABC?

(1) AB = 5
(2) x = 90

Answer is given Below

ANSWER D[/img]

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Regards
Aman

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Source: Beat The GMAT — Data Sufficiency | Thu Jun 30, 2011 11:30 am

amit2k9: Master | Next Rank: 500 Posts; Posts: 461; Joined: Tue May 10, 2011 9:09 amFollowed by: 3 members; Location: pune; Thanked: 36 times

by amit2k9 » Thu Jun 30, 2011 10:14 pm

a 3,4,5 is a Pythagorean triplet 25 = 16 + 9. hence 1/2 * 3*4.

b x=90 means 1/2 * 3* 4 = area.

hence D it is.

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