Ответ:
1. P= (7+9)×2= 32
S=7×9=63
2.P=(11+8)×2=38
S=11×8=88
3. P= (2+2)×2=8
S=2×2=4
Sобщая= 63+88+4= 155
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Ответ:
1. P= (7+9)×2= 32
S=7×9=63
2.P=(11+8)×2=38
S=11×8=88
3. P= (2+2)×2=8
S=2×2=4
Sобщая= 63+88+4= 155