Zadanie 1
a=100m , b=60m
P=a*b=100m*60m=6000m^2
=6*10^3m^2 odrzucamy odp. D
A.
6km^2=6*(1000m)^2=6*(10^3m)^2=6*10^6m^2=6000000m^2
B.
6ha=6*(100m)^2=6*(10^2m)^2=6*10^{2*2}m^2=6*10^4m^2=60000m^2
C.
60a=0,6ha=0,6*10000m^2=6000m^2 TAK
Odpowiedź C
1ha = 100 a => 1a = 0,01 ha
1ha = 100m x 100m = 100 000 m^2
1$km^2$ = 1000m x 1000m = 1 000 000 m^2
Zadanie 2
3 h 28 min 53 s - 2 h 10 min. 11 s = 1 h 18 min 42 s = (60+18)min + 42s = 78 min 42s
odpowiedź D
Zadanie 3
1 hl = 100 l = 100 * 1000ml = 100 000 ml
100 000 ml *13,5\frac{g}{ml}=135*10000=1350000g=1350kg=1,35t odpowiedź D
1000g = 1kg
1000kg = 1t