Tolong pakai cara yaa

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Tolong pakai cara yaa​

Jawaban:

d. 25

Penjelasan dengan langkah-langkah:

BD²=DC²+BC²

=9²+12²

=81+144

=225 cm

BD=√225

=15 cm

AD²=AB²+BD²

=20²+15²

=400+225

=625 cm

AD=√625

=25 cm


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