Pada gambar berikut , AC merupakan diameter dan besar < BOC=80 derajat . jika panjang busur BC=8 cm maka panjang busur AB= A.8cm B.10 cm C.12cm D.14 cm tolong kasih sama caranya
FahmiHidayat
Pakai perbandingan. Busur AC : Busur BC = Sudut AOC : Sudut BOC Busur AC : 8 cm = 180derajat : 80derajat Busur AC x 80 = 180 x 8 Busur AC x 80 = 1440 Busur AC = 1440 : 80 = 18 cm
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ashshiddiqy
Sdt boc=80' busur bc =8 cm bsr ab=? sdt AOB=180-80=100 sdt AOB ; sdt BOC=bsr AB;bsr BC 100 ; 80 =bsr AB; 8 bsr AB=100/80 x 8 =10/8 x 8 =10 cm
Busur AC : Busur BC = Sudut AOC : Sudut BOC
Busur AC : 8 cm = 180derajat : 80derajat
Busur AC x 80 = 180 x 8
Busur AC x 80 = 1440
Busur AC = 1440 : 80 = 18 cm
busur bc =8 cm
bsr ab=?
sdt AOB=180-80=100
sdt AOB ; sdt BOC=bsr AB;bsr BC
100 ; 80 =bsr AB; 8
bsr AB=100/80 x 8
=10/8 x 8
=10 cm