1 cm = 10 mm 1 mm = 0,1 cm [latex]11,6mm^2 = 11,6 mm * 1 mm = 1,16 cm * 0,1 cm = 0,116 cm^2[/latex] [latex]2,16 km^2 = 2,16 km * 1 km = 2160 m * 1000 m = 2160000m^2[/latex] [latex]0,7 cm^2 = 0,7 cm * 1 cm = 7 mm * 10 mm = 70 mm ^2[/latex] [latex]0,47 m^2 = 0,47 m*1m = 47 cm * 100 cm = 4700 cm ^2[/latex] [latex]0,4m^2 = 0,4 m* 1 m = 0,0004km*0,001 km = 0,0000004 km^2[/latex] [latex]1,2 cm^2 = 1,2 cm * 1 cm = 0,012 m * 0,01 m = 0.00012m^2[/latex] [latex]Zadanie :\a = 4m = 40 dm \b = 60 dm \\P=ab \\P = 40 dm * 60 dm = 2400 dm^2[/latex] [latex]Zadanie .nr2\a = 15 dm \b = 40 cm = 4 dm \\P = ab \\P = 15 dm * 4 dm = 60 dm^2[/latex] [latex]Zadanie.nr3\a = 0,5 m = 5 dm \b = 150 cm = 15 dm \\P = ab \P = 5 dm * 15 dm = 75 dm^2[/latex] [latex]zadanie.nr 4\a = 0,07 km = 70 m = 700 dm \b = 1,2 m = 12 dm \\P = ab \\P = 700 dm * 12 dm = 8400 dm^2[/latex]
1cm^2 = 100mm^2 bo: 1cm - 10mm 1cm * 1cm = 1cm^2 więc, 10mm * 10mm = 100mm^2 11,6mm^2 = 0,116cm^2
