explain how you will measure area of square on a graph paper
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Draw an outline of the area onto graph paper, or lay transparent graph paper over the picture of the area. Orient the boxes so that a line with a known distance cuts squarely through them, not on a diagonal.
Smaller boxes = better area approximation.
Count: All the boxes that are completely inside the area plus boxes mostly empty as 0.0, mostly full as 1.0, half full as 0.5
Or, some similar scheme that seems better. Now you have the area box count.
Count the boxes that the known distance line bisects.
Divide the known length by the line’s box count. Square the result to get the area of each. Multiply by the area box count.
Example: 900 full or mostly full. 200 half full. area box count 1000.
Known distance 10 meters cuts through 20 boxes.
Box width 0.5 meter. Each box .25 square meter. Total area 250 square meters.
Smaller boxes = better area approximation.
Count: All the boxes that are completely inside the area plus boxes mostly empty as 0.0, mostly full as 1.0, half full as 0.5
Or, some similar scheme that seems better. Now you have the area box count.
Count the boxes that the known distance line bisects.
Divide the known length by the line’s box count. Square the result to get the area of each. Multiply by the area box count.
Example: 900 full or mostly full. 200 half full. area box count 1000.
Known distance 10 meters cuts through 20 boxes.
Box width 0.5 meter. Each box .25 square meter. Total area 250 square meters.
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