Question

mm : (300 · 3) = 40 пожалуйста

Answer 1

$mm \div (300 \times 3) = 40 \\ {m}^{2} \div 900 = 4 \\ {m}^{2} = 900 \times 4 \\ {m}^{2} = 3600 \\ m = 60$