Question

in fig12.39 ABCD is a rhombus in which diagonal AC and BD intersect at O if OD=6cm AD=10 cm and BD=AC find
(AC+BD)​

Answer 1

Answer:

According to quesion,

AB=10,  BD=16

From figure,

AO+OC=AC

&  AO=OC

=> 2AO=AC

In △AOB, from pythagorous

AB2=AO2+BO2

=>  100=64+AO2

=> AO=6

Since, AC=2OA,

Hence, AC=12cm

Answer 2

Ac =12 cm

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