Odpowiedzi

2009-11-18T18:14:25+01:00
P1 = 5*8=40cm²
Domek = 2*2=4cm²
Kwiaty = 4*1/2=2cm²

Trawnik = 40-4-2=34cm²

1cm->600cm
1cm²->3600cm²

1a=100m²=10000cm²
Pole trawnika na realu=3600*34=122400cm²=12,24a
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2009-11-18T18:18:28+01:00
1:600
1cm-600cm

Pc=5cm*8cm=40cm^
Pk=4*1cm*1cm/2=2cm^
Pd=2cm*2cm=4cm^

Pt=40cm^-2cm^-4cm^=24cm^

1cm-600cm
34cm^-x

1cm^-360000cm^
34cm^-x
x=12240000cm^=12,24a
48 3 48