jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjnnnnnnnnnnnnnnnnnnnnnnnnnnnnrrrrrrrrrrrrrrrrrrrrrrrrrrxccccccccccccccccccccrrrrrrrrrrrrrrrrrrrrbbbbbbbbbbbbbbbbbbbbbbb 219: 3- 57 = 16
Ответ:
28 см²
Пошаговое объяснение:
s=a*b Р= (a+b)*2
22-8=14 14:2=7 см сторона а
s=7*4=28 см²
476517,459448,57000,146287
1 четырёх и 4 треугольника
10/2-1/5=10*5/2*5-1*2/5*2=50/10-2/10=48/10=4,8