Răspuns :
Răspuns:
cosC=AC/BC=3/5 =>AC = 12 cm
AB^2 = BC^2 - AC^2 (T. Pit.)
AB^2 = 400 - 144 = 256 =>AB = 16 cm
P = 16+12+20 =48 cm
R=Ipotenuza / 2 = 10 cm
Răspuns:
cosC=AC/BC=3/5 =>AC = 12 cm
AB^2 = BC^2 - AC^2 (T. Pit.)
AB^2 = 400 - 144 = 256 =>AB = 16 cm
P = 16+12+20 =48 cm
R=Ipotenuza / 2 = 10 cm