tolong jawab ya kak, pakai pytaghoras ya

ini saya coba bantu..

cari dulu BD.
BD = √15²-9².
BD = √225-81.
BD = √144.
BD = 12.

cari CD.
CD = √12²+5².
CD = √144+25.
CD = √169.
CD = 13.

jadi panjng CD adl 13 cm.

dik : AB = 15 cm ; AD = 9 cm ; BC = 5 cm
dit : BD dan CD
jawab :
* Segitiga ABD
BD² = AB² - AD²
BD² = 15² - 9²
BD² = 225 - 81
BD² = 144
BD = √144 = 12 cm

* Segitiga BCD
CD² = BC² + BD²
CD² = 5² + 12²
CD² = 25 + 144
CD² = 169
CD = √169 = 13 cm