Odpowiedź :
r1 + r2 = 12
r1 - r2 = 3
2r1 = 15
r1 = 7,5
r2 = 12-r1 = 12 - 7,5 = 4,5
r1 = 7,5cm r2 = 4,5cm
r1 - r2 = 3
2r1 = 15
r1 = 7,5
r2 = 12-r1 = 12 - 7,5 = 4,5
r1 = 7,5cm r2 = 4,5cm
r1+r2=12 -> r2=12-r1
r1-r2=3
r1-(12-r1)=3
r1-12+r1=3
2r1=3+12
2r1=15
r1=7,5cm
r2=12-r1
r2=12-7,5
r2=4,5 cm
r1-r2=3
r1-(12-r1)=3
r1-12+r1=3
2r1=3+12
2r1=15
r1=7,5cm
r2=12-r1
r2=12-7,5
r2=4,5 cm