6. (10 points) An Englishman was the owner of a plot of land in Russia. He knows that, in the units familiar to him, the size of his plot is two acres. The cost of the land is 500,000 rubles per hectare. It is known that 1 acre = 4840 square yards, 1 yard = 0.9144 meters, 1 hectare = 10000 m². Calculate how much the Englishman will receive from the sale.
Answer: approximately 405000 rubles

Solution. 1 square yard $=0.9144 \cdot 0.9144=0.83612736 \mu^{2}$,

2 acres $=2 \cdot 4840=9680$ square yards $=9680 \cdot 0.83612739=8093.7128448 m^{2}$ (2 points), 8093.7128448 $\mu^{2}=\frac{8093.7128448 \mu^{2}}{10000} \approx 0.80942 a$,

$0.8094 \cdot 500000=404685.6$ rub.