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In a ABC BAC = 90 and AD is perpendicular to...

This question belongs to Arithmetic Ability Geometry
Geometry
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In a ΔABC, ∠BAC = 90° and AD is perpendicular to BC where D is a point on BC. If BD = 4 cm and CD = 5 cm, then the length of AD is equal to:

Answer & Solution
Correct Answer: Option C
Geometry mcq question image
AD2 = BD × CD
AD2 = 4 × 5
AD = 2√5
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