SSC CGL 17 Aug 2017 Shift 1 Paper

Question : 68 of 100

Marks: +1, -0

ΔABC is right angled at B. BD is an altitude. AD = 9 cm and DC = 16 cm. What is the value of BD (in cm) ?

Solution:

According to the question,

In Δ ABC,

B D^{2}=A D × D C=9 ×16=144

∴

B D=√{144}=12 {\cm}

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