А) Р = 17 + 9 + 12 + 4 + (17-12) + (9-4) = 52
S = 12×9 + 5×5 = 108 + 25 = 133
Б) Р = 6 + 2 + (12-6) + (6-2) + 12 + 6 = 36
S = 6×6 + (12-6)(6-2) = 36 + 6×4 = 36+24 = 60
А) Р = 17 + 9 + 12 + 4 + (17-12) + (9-4) = 52
S = 12×9 + 5×5 = 108 + 25 = 133
Б) Р = 6 + 2 + (12-6) + (6-2) + 12 + 6 = 36
S = 6×6 + (12-6)(6-2) = 36 + 6×4 = 36+24 = 60