1) периметр (5+2)×2=14
площадь 5×12=60
2) 3×+×=92
4×=92
×=92÷4
×=23
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Answers & Comments
1) периметр (5+2)×2=14
площадь 5×12=60
2) 3×+×=92
4×=92
×=92÷4
×=23