Ответ:
P=2(a+b)
a= 1 3/5 = 1.6b= 1/2 =0.5P=2* (1.6+0.5) = 3.2 + 1 = 4.2(м)
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Ответ:
P=2(a+b)
a= 1 3/5 = 1.6
b= 1/2 =0.5
P=2* (1.6+0.5) = 3.2 + 1 = 4.2(м)