Pertanyaan

Tentukan panjang EC !

Tentukan panjang $EC$ !

O. Rahmawati

Master Teacher

Mahasiswa/Alumni UIN Sunan Gunung Djati Bandung

Jawaban terverifikasi

Jawaban

panjang .

panjang

Pembahasan

Menentukan perbandingan sisi-sisi segitiga untuk menentukan : Jadi, panjang .

Menentukan perbandingan sisi-sisi segitiga untuk menentukan :

$table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator A D over denominator A E end fraction end cell italic equals cell fraction numerator A B over denominator A C end fraction end cell row cell fraction numerator A D over denominator A E end fraction end cell italic equals cell fraction numerator A D italic plus D B over denominator A E italic plus E C end fraction end cell row cell fraction numerator 4 space cm over denominator 5 space cm end fraction end cell equals cell fraction numerator 4 space cm plus 7 space cm over denominator 5 space cm space plus E C end fraction end cell row cell fraction numerator 4 space cm over denominator 5 space cm end fraction end cell equals cell fraction numerator 11 space cm over denominator 5 space cm plus E C end fraction end cell row cell 20 space cm squared plus 4 space cm. space E C end cell equals cell 55 space cm squared end cell row cell E C end cell equals cell fraction numerator 55 space cm squared minus 20 space cm squared over denominator 4 space cm end fraction end cell row cell E C end cell equals cell fraction numerator 35 space cm squared over denominator 4 space cm end fraction end cell row cell E C end cell equals cell 8 comma 75 space cm end cell end table$

Jadi, panjang E C equals space 8 comma 75 space cm .