Answer:
horses:40°
goats:120°
sheeps:20°
cows:180°
Explanation:
4+12+2+18=36 (total number of animals)
360°÷36=10° (a circle has a angle of 360°)
This means that 1 animal is 10°
horses: 4 × 10° = 40°
goats: 12 × 10° = 120°
sheeps: 2 × 10° = 20°
cows: 18 × 10° = 180°