Math, asked by Shantul, 1 year ago

please solve the following question

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Answered by Nikhit111

0

Answer:

Step-by-step explanation:

Given DC=AB

draw BH//AD. H will be middle point of DC as AB=DH

EF//AB, FI=AB

triangle BHC and triangle BIE are similar as the corresponding sides are parallel

IE/HC=BE/BC

IE=HC×BE/BC

=Y×4X/7X

=4Y/7

EF=FI+IE=Y+4Y/7

=11Y/7

THEREFORE 7EF=11AB

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