Tolong bantu yaa pake caranya

AC = BC = 5cm
OB = AO = 4cm

mencari OC (pakai phytagoras)

OC kuadrat = BC kuadrat - OB kuadrat
= 5 kuadrat - 4 kuadrat
= 25 - 16
= 9
OC = akar 9 = 3

Jawaban : B