លំហាត់ ៨១៨

818. កំណត់ចំនួនចតុកោណកែង និងចំនួនឆកោណក្នុងរូបខាងក្រោម។

A. 30 , 5
B.  32 , 3
C.  28 , 5
D. 30 , 3

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