a)
70+80+50+120=320m
320m-4,5m=315,5m
Powinien kupic 315,5m siatki.
b)
Skoro to trapez to policz ze wzoru
P=½(a+b) *h
P=½(120+80)*30=½*200*30=3000m²
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a)
70+80+50+120=320m
320m-4,5m=315,5m
Powinien kupic 315,5m siatki.
b)
Skoro to trapez to policz ze wzoru
P=½(a+b) *h
P=½(120+80)*30=½*200*30=3000m²