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Dari gambar dibawah, panjang BD adalah begin mathsize 14px style horizontal ellipsis end style 


P. Tessalonika

Master Teacher

Mahasiswa/Alumni Universitas Negeri Medan

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Pembahasan

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell B C end cell equals cell square root of A B squared plus A C squared end root end cell row blank equals cell square root of 6 squared plus 8 squared end root end cell row blank equals cell square root of 36 plus 64 end root end cell row blank equals cell square root of 100 end cell row blank equals cell 10 space cm end cell end table end style 



begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator A C over denominator B C end fraction end cell equals cell fraction numerator C D over denominator A C end fraction end cell row cell fraction numerator 8 space cm over denominator 10 space cm end fraction end cell equals cell fraction numerator 10 minus x over denominator 8 space cm end fraction end cell row cell 64 space cm end cell equals cell 100 space cm minus 10 x end cell row cell 10 x end cell equals cell open parentheses 100 minus 64 close parentheses space cm end cell row cell 10 x end cell equals cell 36 space cm end cell row x equals cell 3 comma 6 space cm end cell end table end style 

Maka, panjang BD adalah 3,6 cm.

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