Răspuns :
a+b+c=630
b=4xa
b=2xc =>c=b/2
c=4a/2=> c=2a
a+4a+2a=630
7a=630
a=630/7
a=90
b=4x90
b=360
c=2x90
c=180
a=90,b=360,c=180
b=4xa
b=2xc =>c=b/2
c=4a/2=> c=2a
a+4a+2a=630
7a=630
a=630/7
a=90
b=4x90
b=360
c=2x90
c=180
a=90,b=360,c=180
a ____/
b ____/____/____/____/
c ____/____/ total 630
a= 630 : 7= 90
b= 4x90=360
c= 2x90=180
b ____/____/____/____/
c ____/____/ total 630
a= 630 : 7= 90
b= 4x90=360
c= 2x90=180