Question

Bantuin ya kak
pakai cara, Thanks!

*NoSpamYesss!!

Answer 1

Gw spam sedikit boleh ya dek
sdh si hebat kok cuma 15 poin , 50 poin kek utk soal susah hehehe
ngaklah gw cuma  mau bantu aja

AC = 16 OC = OB = 12
garis singgung AC siku2 dgn OC alias tegak lurus

segitiga ACO siku2 di C
AO^2  = AC^2 + CO^2
AO^2 = 256 + 144 = 400
AO = 20

luas layang2 ACOB = 2 x luas segitiga ACO
1/2 AO x BC = 2 x 1/2 AC X OC

20 X BC = 2 X 16 X 12
BC = 384/20 = 19,2  jawaban A