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Perhatikan gambar berikut! Jika panjang , , dan...

Perhatikan gambar berikut!

Jika panjang begin mathsize 14px style text BC = 20 cm end text end stylebegin mathsize 14px style text DC = 9 cm end text end style, dan begin mathsize 14px style text AD = 6 cm end text end style. Tentukan panjang begin mathsize 14px style text BE end text end style!

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Jawaban:

Perhatikan perhitungan berikut ini.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator text BE end text over denominator text BC end text end fraction end cell equals cell fraction numerator text AD end text over denominator text AC end text end fraction end cell row cell fraction numerator text BE end text over denominator text BC end text end fraction end cell equals cell fraction numerator text AD end text over denominator text AD+DC end text end fraction end cell row cell fraction numerator text BE end text over denominator 20 end fraction end cell equals cell fraction numerator 6 over denominator 6 plus 9 end fraction end cell row cell fraction numerator text BE end text over denominator 20 end fraction end cell equals cell 6 over 15 end cell row cell text BE end text end cell equals cell fraction numerator 6 times 20 over denominator 15 end fraction end cell row cell text BE end text end cell equals cell 40 over 5 end cell row cell text BE end text end cell equals 8 end table end style

Jadi, panjang begin mathsize 14px style text BE end text end style adalah begin mathsize 14px style text 8 cm end text end style.

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