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 result:

m =  36969 kg

Solution:

S1=1 ha→m2=1⋅ 10000 m2=10000 m2 m1=3500/S1=3500/10000=720=0.35 kg/m2  a=325 m S=a2=3252=105625 m2 m=m1⋅ a2=0.35⋅ 3252=1478754=36969 kgS_{1}=1 \ ha \rightarrow m^2=1 \cdot \ 10000 \ m^2=10000 \ m^2 \ \\ m_{1}=3500/S_{1}=3500/10000=\dfrac{ 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=0.35 \cdot \ 325^2=\dfrac{ 147875 }{ 4 }=36969 \ \text{kg}

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