perhatikan gambar diatas. panjang CD adalah . . . a. 15 cm b. 16 cm c. 17 cm d. 20 cm

Mapel : Matematika
Bab : Teorema Phytagoras

Diketahui :
- AD = 12 cm
- AB = 9 cm
- BC = 8 cm

Ditanya :
- CD = ......?

Penyelesaian :
- BD :
BD = √AD² + AB²
BD = √12² + 9²
BD = √144 + 81
BD = √225
BD = 15 cm

- CD :
CD = √BC² + BD²
CD = √8² + 15²
CD = √64 + 225
CD = √289
CD = 17 cm

Jawaban : C. 17 cm

Maaf Kalau Salah

Please, let me answer your question :)
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Mapel : Matematika
Tentang : Segitiga Siku-Siku dan Phytagoras
Pertanyaan yg diajukan : 1
Pembahasan :

Cari dulu BD dengan cara :

BD² = AD² + AB²
BD² = 12² + 9²
BD² = 144 + 81
BD = √225
BD = 15 cm

Lalu langsung cari CD :

CD² = BD² + CB²
CD² = 15² + 8²
CD² = 225 + 64
CD = √289
CD = 17 cm

Jawaban : C

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Hopefully this is the best for you.

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Heil Manstein!