Question

A farmer's rectangular plot measures 400m by 225m.How many square metres of land should he buy more to make the area of his field equal to 10 hectare?
Area = 400 * 225 = 90,000m^2.

10,000m^2/hectare * 10hectares = 100,000 m^2.

100,000 - 90,000 = 10,000 m^2 needed.
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