giải giúp mk vs a Question giải giúp mk vs a in progress 0 Môn Toán Dulcie 5 years 2021-05-07T17:29:14+00:00 2021-05-07T17:29:14+00:00 1 Answers 28 views 0
Answers ( )
Đáp án: $d(C’,(SBC))=\dfrac{a\sqrt{42}}{14}$