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a=16
ab=8*8
ab=64
b=64/a
b=64/16
b=4
Obw=2a+2b=2*16+2*4=32+8=40
P = a × a
Pole = 8×8
P =64cm²
64:16= 4 ← 2 bok prostokąta
2 4 + 2 × 16 = 40
Czyli obwod wynosi 40 cm ;p;p