A) 13 cm
B) 12 cm
C) \[2\sqrt{39}\] cm
D) 6 cm
Correct Answer: B
Solution :
(b): In the given rhombus, we have: \[AB=10\]cm and \[OA=8\]cm \[\therefore \] \[O{{B}^{2}}=A{{B}^{2}}-~O{{A}^{2}}={{(10)}^{2}}-{{8}^{2}}-36\] \[\Rightarrow OB=\sqrt{36}=6cm\] \[\therefore \] \[BD=2\times OB=(2\times 6)cm=12cm\]You need to login to perform this action.
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