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1m-100 cm
3m-300 cm
1 dm=10 cm
2m=200 cm
Czyli bierzemy pod uwagę,te 200 cm,300 cm i 10 cm...
Pc=2 *Pp +Pb
3m = 30 dm = a 1 dm = b 2 m = 20 dm = H
P = 2ab + 2 aH + 2bH
P = 2 * 30 dm * 1dm + 2 * 30 dm * 20 dm + 2 * 1 dm * 20 dm = 60 + 1200 + 40 = 1300 dm kwadratowych
P = 2ab + 2 aH + 2bH
P = 2 * 30 dm * 1dm + 2 * 30 dm * 20 dm + 2 * 1 dm * 20 dm = 60 + 1200 + 40 = 1300 dm kwadratowych