1. In ΔABC, ∠BAC = 90° and AD is drawn perpendicular to BC. If BD = 7 cm and CD = 28 cm, then what is the length (in cm) of AD?





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  • By: anil on 05 May 2019 01.47 am

    Given : BD = 7 cm and DC = 28 cm To find : AD = ? Solution : In $$ riangle$$ ABC => $$(AD)^2=(BD) imes(DC)$$ => $$(AD)^2=7 imes28=196$$ => $$AD=sqrt{196}=14$$ cm => Ans - (D)
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