Question

15 ari+ 2,23hm²-6m²
Cum?

Answer 1

15 ari = 1500 $m^{2}$
2,23 $hm^{2}$ = 22300 $m^{2}$
1500 $m^{2}$ + 22300 $m^{2}$ - 6 $m^{2}$ = 23794 $m^{2}$

Answer 2

       
$\text{Transformam tot in }\underline {m^2} \\ 1\;ar = 1\;dam^2 = 100\;m^2\;\;\;=\ \textgreater \ \;\;\;15\;ari=1500\;m^2 \\ 1\;hm^2=1\;ha=10000\;m^2\;\;\;=\ \textgreater \ \;\;\;2,23\;hm^2=22300\;m^2\\ \\ 15\;ari+2,23\;hm^2-6\;m^2= \\ =1500\;m^2+22300\;m^2-6\;m^2=\boxed{23794\;m^2}$