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germanturchin

Ответ:


Пошаговое объяснение:

1. P=(6+11)*2=34, S=6*11=66

2. b=56/7=8, P=(7+8)*2=30

3.a=48/2=24; 24-12=12, S=12*12=144

4.b=190/20=9,5, P=(20+9,5)*2=59

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