tolong di jawab, makaseh
Jawaban:
13 cm
Penjelasan dengan langkah-langkah:
AC^2 = CB^2 + AB^2
15^2 = CB^2 + 9^2
225 = CB^2 + 81
225 - 81 = CB^2
144 = CB^2
akar 144 = CB
12 cm = CB
BD^2 = CB^2 + CD^2
BD^2 = 12^2 + 5^2
BD^2 = 144 + 25
BD^2 = 169
BD = akar 169
BD = 13 cm
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