Question

Wyraź w metrach kwadratowych - m2
12 km2
1,67 km2
0,48 km2
865 dm2
0,67 dm2
9,2 dm2
4480 cm2
12 cm2
530 cm2

Answer 1

12 km2= 12 x km x km= 12 x 1000m x 1000 m= 12000000 m2
1,67 km2= 1,67 x km x km= 1,67 x 1000 m x 1000m = 1670000 m2
0,48 km2= 0,48 x km x km= 0,48 x 1000m x 1000 m= 480000 m2
865 dm2= 865 x dm x dm= 865 x 1/10 x 1/10 = 865/100 = 8,65 m2
0,67 dm2= 0,67 x dm x dm = 0,67x  1/10 x 1/10= 0,067 m2
9,2 dm2= 9,2 x dm x dm= 9,2 x 1/10 x 1/10= 9,2/ 100 = 9,02 m2
4480 cm2= 4480 x cm x cm= 4480 x  1/10000= 4480/10000= 0,4480 m2
12 cm2= 12 x cm x cm= 12x 1/10000= 12/10000 = 0,0012 m2
530 cm2= 530 x cm xcm= 530 x 1/10000= 530/10000= 0,0530 m2