A) \[\sqrt{7}\,\,cm\]
B) \[2\sqrt{7}\,\,cm\]
C) \[2\sqrt{5}\,\,cm\]
D) \[\sqrt{5}\,\,cm\]
Correct Answer: C
Solution :
\[AC=BC=4\,cm\] \[OA=6\,cm\] \[\therefore \]\[OC=\sqrt{{{6}^{2}}-{{4}^{2}}}\] \[=\sqrt{(6+4)(6-4)}\] \[=\sqrt{10\times 2}=2\sqrt{5}\,cm\]You need to login to perform this action.
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