एक त्रिभुज ABC में, angleBCA = 90^(@) और...

एक त्रिभुज ABC में, `angleBCA = 90^(@)` और CD लंब है AB पर । यदि AD = 4 cm और BD = 9 cm हो, तो DC का मान क्या होगा ?

A

`sqrt(18) cm`

B

`sqrt(20) cm`

C

`sqrt(65) cm`

D

6 cm

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