60/720×360=
100/720×360=
80/720×360=
100/720×360=
80/720×360=
1. 60/720 ×360 = 0,5 × 60 = 30
2. 100/720 × 360 = 0,5 × 100 = 50
3. 80/720 × 360 = 0,5 × 80 = 40
1. 60/720 ×360 = 0,5 × 60 = 30
2. 100/720 × 360 = 0,5 × 100 = 50
3. 80/720 × 360 = 0,5 × 80 = 40