Mathematics
Suppose the adjoining figure represents an aerial photograph of a forest with each dot representing a tree. Your purpose is to find the number of trees there are on this tract of land as part of an environmental census.

Mathematical Modelling
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Answer
Steps :
Take 1 cm2 area and count no. of trees (let it be n).
Calculate area of forest (let it be a).
Multiply total area and no. of trees in 1 cm2 area.
Hence, total number of trees in forest will be an.
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