3hm2+25dam2+3m2=...are

[tex]3hm^{2} + 25 {dam}^{2} + 3 {m}^{2} \\ = 3ha + 25are + 3 \times 100are \\ = 3 \div 100are + 25 + 300 \\ = 0.03 are + 325are \\ = 325.03are[/tex]
semoga membantu:)