Potatoes

When planting potatoes there are consumed 3 500 kg of seed per 1 ha. Calculate the weight of the seed needed for fitting a square area with a side length 325 meters.

Correct answer:

m =  36969 kg

Step-by-step explanation:

$$\begin{gathered} S_1=1\text{ha}\to {\text{m}}^2=1\cdot 10000{\text{m}}^2=10000{\text{m}}^2 \\ {m}_1=3500/S_1=3500/10000=\frac{7}{20}=0.35{\text{kg/m}}^2 \\ a=325\text{m} \\ S=a^2=325^2=105625{\text{m}}^2 \\ m=m_1\cdot a^2=\frac{7}{20}\cdot a^2=0.35\cdot 325^2=36969\text{kg} \end{gathered}$$

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