38m2=0,0038ha
\(16hm2m=1602m\)
\(19000hm^2=190km^2\)
\(\left(3+\dfrac{3}{11}\right):\left(1+\dfrac{5}{22}\right)=\dfrac{36}{11}:\dfrac{27}{22}=\dfrac{36}{11}\cdot\dfrac{22}{27}=\dfrac{4}{3}\cdot2=\dfrac{8}{3}\)
38m2 = 38/10000
16hm 2m = 1602m
19000hm2 = 190 km2
3 và 3/11 chia 1 và 5/22 = 8/3