Объяснение:
1) S = 1/2 × 8 × 6 = 24
r = (8 + 6 - 10)/2 = 2
2) S = 1/2 × 12 × 5 = 30
r = (12 + 5 - 13)/2 = 2
Объяснение:
1) S = 1/2 × 8 × 6 = 24
r = (8 + 6 - 10)/2 = 2
2) S = 1/2 × 12 × 5 = 30
r = (12 + 5 - 13)/2 = 2