Question

Hitunglah panjang segitiga ab, bc dan bd jika panjang ad :8cm dan panjang ac:20 cm


Tolong dijawab dong
Makasih bgt yg udh bantu

Answer 1

Jawab:

AD = 8 cm

AC = 20 cm

CD = 20 - 8 = 12 cm

AB² = AD x AC

      = 8 x 20 = 160

AB = cm

BC² = CD x AC

      = 12 x 20 = 240

BC = cm

BD² = AD x CD

      = 8 x 12 = 96

BD = cm

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DETAILS :

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Mapel : Matematika

Kelas : 9

Materi :Kesebangunan & Kongruensi

Kata Kunci : Kesebangunan, Kongruensi, Kesebangunan Segitiga

Kode soal : 2

Kode Kategori : 9.2

Answer 2

AD + AC = 28

AB = ½ . AC

= ½ . 28

= 14

BC = ½ . AC√3

= ½ . 28√3 . √3

= ½ . 28 . 3

= 42

BD = AB - AD

= 14² - 8²

= 196 - 64

= 132

= √132

= 2√33