TOLONG BANTU JAWAB TUGAS KU YA KAK​

Jawaban:

a. AB = 15√3 cm

BC = 10 cm

b. K = 30√3 cm + 20 cm

Penjelasan dengan langkah-langkah:

AB/AC = √3/2

AB/20 = √3/2

AB = √3/2 × 30

AB = 30√3 / 2

AB = 15√3

BC/AC = 1/2

BC/20 = 1/2

BC = 1/2 × 20

BC = 20/2

BC = 10

Keliling = 2(AB + BC)

= 2(15√3 cm + 10 cm)

= 30√3 cm + 20 cm