Question

tolong di jawab dgn cara kerjanya​

Answer 1

Jawaban:

Penyelesaian :

• AD = 9 cm
• BD = 16 cm
• AC = 15 cm

Mencari panjang BC

[tex] \sf BC = \sqrt{( {AC }^{2} - {AD }^{2}) + { BD}^{2} } [/tex]

[tex]\sf BC = \sqrt{ {(15}^{2} - {9}^{2} ) + {16}^{2} } [/tex]

[tex]\sf BC = \sqrt{(225 - 81) + {16}^{2} } [/tex]

[tex]\sf BC = \sqrt{144 + 256} [/tex]

[tex]\sf BC = \sqrt{400} [/tex]

[tex]\sf BC = 20 \: cm[/tex]

Answer 2

Jawab:

Penjelasan dengan langkah-langkah:

CD = √AC² - √AD²

     = √15² - √9²

     = √225 - √81

     = √144

     = 12 cm

CB = √CD² + √DB²

     = √12² + √16²

     = √144 + √256

     = √400

    = 20 cm