P=60arów=6 000m2
P=1/2(a+b)*h
a=100m
h=20
6000=1/2(100+b)*20
6000=(100+b)*10
6000=1000+10b
10b=5000
b=500
1 a to100
60 a 6000
6000=
10b=5000|:10
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P=60arów=6 000m2
P=1/2(a+b)*h
a=100m
h=20
6000=1/2(100+b)*20
6000=(100+b)*10
6000=1000+10b
10b=5000
b=500
1 a to100
60 a 6000
P=1/2(a+b)*h
h=20
6000=
6000=(100+b)*10
6000=1000+10b
10b=5000|:10
b=500