Pt=4mx6m=24m2
Pś=(4+2*0,8)*(6+2*0,8) - Pt
Pś=5,6*7,6 - 24
Pś=42,56-24
Pś=18,56 m2
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Pt=4mx6m=24m2
Pś=(4+2*0,8)*(6+2*0,8) - Pt
Pś=5,6*7,6 - 24
Pś=42,56-24
Pś=18,56 m2