In a rhombus ABCD, AO=10 cm and BO=12 cm. How much is the area of this rhombus?
(A) 240
(B) 350
(C) 400
(D) 480
(E) None of the above
Diagonals of rhombus bisect each other which means that AO=CO and BO=DO.
Therefore,
cm
And
cm
Area of rhombus
Hence, the answer is (A).
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