keliling ∆ABC sama kaki = 50 cm. jika panjang AC = BC = 15 cm, maka panjang AB = ..... di kasih caranya ya...

Question

Matematika Diposting : 2017-04-30 Diupdate : 2022-05-25 amelia2016

Pertanyaan

keliling ∆ABC sama kaki = 50 cm. jika panjang AC = BC = 15 cm, maka panjang AB = .....
di kasih caranya ya...

Answer 1

K Δ= ab + bc + ab
50 = 15 + 15 + ab
50 = 30 + ab
50-30 = ab
20 = ab

Answer 2

Keliling ABC = AC + BC + AB
50 = 15 + 15 +AB
50 = 30 + AB
AB = 50 - 30= 20