Tolong bantuPakai cara Terima kasih
Jawaban Terkonfirmasi
Jawab
r= 14 cm
a= 120
panjang busur AB = p = 120/360 x keliling lingkaran
p = 1/3 x 2 x 22/7 x 14
p = 1/3 x 88
p= 88/3
Panjang kawat = p + 2r = 88/3 + 2(14) = 172/3 m
Biaya = panjang kawat x Rp 50.000
Biaya = 172/3 x 50.000 = 2.866,67 rp