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D = S*d / : d
S = D / d
S = 1 500 000cm / 0.15 cm
S: 1 cm :10000000
Zadanie 2
1cm -> 5km
1cm^2 -> 25km^2
p= P/M
p= 2 300 km2/25km^2
p = 92 km^2 -> 920 000 000 000 cm^2