In the figure, AP=3cm,AR=4.5cm,AQ=6cm,AB=5cm, and AC=10cm. Find the length (in cm) of AD
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Solution
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ΔAPQ is similar to ΔABC
(AAA postulate)
(∵)APAB=AQAC
As AD is line from common vertex,
ΔAPR∼ΔABD
APAB=ARAD
∴AD=AB×ARAP
=5×4.53
=7.5CM
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