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Kubus KLMN.PQRS di bawah ini memiliki panjang rusu...

Kubus KLMN.PQRS di bawah ini memiliki panjang rusuk 13 cm. Panjang PM (diagonal ruang kubus) adalah undefined 

  1. undefined 

  2. undefined 

Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell PM squared end cell equals cell PK squared plus KM squared end cell row cell PM squared end cell equals cell PK squared plus left parenthesis KL squared plus LM squared right parenthesis end cell row cell diagonal space ruang squared end cell equals cell rusuk squared plus rusuk squared plus rusuk squared end cell row cell diagonal space ruang squared end cell equals cell 3 cross times rusuk squared end cell row cell diagonal space ruang end cell equals cell square root of 3 cross times rusuk squared end root end cell row cell diagonal space ruang end cell equals cell rusuk square root of 3 end cell row cell diagonal space ruang end cell equals cell 13 square root of 3 space cm end cell end table end style 

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