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Question

In figure, CAB=90o and ADBC. if AC =75 cm, AB=1 m and BD=1.25 m,find AD.


Solution

In BAC and , we have
BAC=BDA [Each equal to 90o]
and, B=B
So, by AA-criterion of similarity, we have
BACBDA
BABD=ACAD
100125=75AD
AD=125×75100cm=93.75cm

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