A) 10 cm
B) 12 cm
C) 9 cm
D) 8 cm
Correct Answer: A
Solution :
(a): We know that the diagonals of a rhombus bisect each other at right angles. \[\therefore \]\[OA=8cm,\text{ }OB=6cm\text{ }and\text{ }\angle AOB={{90}^{{}^\circ }}\] \[\therefore \]\[A{{B}^{2}}=\left( O{{A}^{2}}+O{{B}^{2}} \right)=\left( {{8}^{2}}+{{6}^{2}} \right)=\left( 64+36 \right)=100\]You need to login to perform this action.
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