^snigdha^ Active member
| Subject: a sum frm Similarity.....plz try dis... Thu Feb 26, 2009 3:20 pm | |
| ABC is a triangle in which DE//BC & AD:BD=3:2. Write down the ratio- area of triangle DEF:area of traingle DEC. [join DC, join EB, DC & EB intersect at F.] plz try to solve dis sum in the easiest way u can....& plz post the solution... |
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^snigdha^ Active member
| Subject: Re: a sum frm Similarity.....plz try dis... Thu Feb 26, 2009 9:41 pm | |
| hey frnz..plz somebody help me wid dis sum... i tried it a million times but to no avail... PLZ TAKE TROUBLE TO GET THIS SUM SOLVED 4 ME! |
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Arya Nair Active member
| Subject: Re: a sum frm Similarity.....plz try dis... Fri Feb 27, 2009 11:38 am | |
| plz...help |
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QUEST Active member
| Subject: Re: a sum frm Similarity.....plz try dis... Fri Feb 27, 2009 7:20 pm | |
| triangle DEF IS SIMILAR TO TRINGLE CBF ( BY AA) => DF /FC = 3/ 5 => FC/DF = 5 /3 =>( FC+ DF ) / DF = 8/3 => CD / DF = 8/3 ------- i now , triangle DEF AND DEC HAVE COMMON VERTEX E HENCE THEIR AREAS WILL BE IN THE RATIO OF THEIR BASES, AS THIER HEIGHTS WILL BE SAME AR(DEF): AR( DEC) = (1/2 . h . DF) : ( 1/2 . h. CD) = DF: CD = 3:8 |
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^snigdha^ Active member
| Subject: Re: a sum frm Similarity.....plz try dis... Tue Mar 03, 2009 12:40 pm | |
| thanx a trillion Quest!! it wuz a gr8 help!! |
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| Subject: Re: a sum frm Similarity.....plz try dis... | |
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