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6+2 = 8
6-2 = 4
Ob = 2a + 2b
a = 8
b = 4
Ob = 2x8 + 2x4 = 16cm + 8cm = 24cm
P = ab
a = 8
b = 4
P = 8x4 = 32cm2 2 na końcu = kwadratowe
a = 24 : 4
a = 6
Prostokąt:
a= 6 + 2 = 8
b= 6 - 2 = 4
Ob= 2*4 + 2*8
Ob= 8 + 16
Ob=24 cm
P= 8*4
P=32 cm2