1) y / z = 30 / 1 => y = 30z
x / y = 11 / 6 => x = 11 * y / 6
x = 330 * z / 6 = 55 * z
2) 55z + 30z + z = 172
86z = 172
z = 2
x = 55z = 55 * 2 = 110
y = 30z = 30 * 2 = 60
S(KBM)/S(ABC)=k²
S(KBM)=8*16=128
НОД (100;75;125)=25
100=2*2*5*5 75=3*5*5 125=5*5*5
НОД (60;90;45)=15
60=2*2*3*5 90=2*3*3*5 45=3*3*5
НОД (60;90;57)=19
38=2*19 76=2*2*19 57=3*19