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:
A. 6 cm
B. 4.5 cm
C. 2√5 cm
D. 5√2 cm
Answer: Option C
Solution (By Examveda Team)
AD2 = BD × CD
AD2 = 4 × 5
AD = 2√5
This Question Belongs to Arithmetic Ability >> Geometry
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