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6/x= 9/(4+x)
9x=24+6x
9x-6x=24
3x=24
x=24/3
x=8
P=1/2*6*8=24 j.²
2]
skala podobienstwa figur= k
skala podobienstwa pól=k²=360m²/36cm²=
3 600 000cm²/36cm²=100 000
k²=100 000
k=√100 000≈316
skala mapy≈ 1;316
spr.
1cm na mapie=316cm=3,16 m w terenie
1cm² na mapie=3,16²=9,99m² w terenie
36 cm² na mapie= x m² w terenie
.................................................................
x=36*9,99≈359,4816m²
czyli rozxw. jest poprawne