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50,4 = a * 2,8
a= 50,4/2,8
a= 18
Pp= b*h2
50,4 = b*1,2
b= 50,4/1,2
b= 42
V= 2a + 2b
V= 36+84
V= 120 dm szesciennych
TO JEST DOBRZE!!!
P = a * h1
50,4 = 2,8a
a = 50,4 : 2,8
a = 18 dm
P = b * h2
50,4 = 1,2b
b = 50,4 : 1,2
b = 42 dm
obwód :
Ob = 2a + 2b
Ob = 2 * 18 dm + 2 * 42 dm
Ob = 36 dm + 84 dm
Ob = 120 dm