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प्रश्न
In ΔABC, DE || BC such that AD =1.5 cm, DB = 3 cm and AE = 1 cm. Find AC.
उत्तर
DE || BC
`"AD"/"AB" = "AE"/"AC"`
⇒ `(1.5)/(4.5) = (1)/"AC"`
⇒ AC = 3m.
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