Answer / vydehi

the area of contour can be determined by dividing it into suitable parts(triangles,rectangles). then sum of the area of all definite parts will give total area.the conversion of scale is important.

Answer / vydehi

by calculating the area of that contour.

Answer / pranav panchal

You are right Vydehi, but can you describe me how can i
calculate the area of contour?

I think it can be calculated with the help of planimeter.

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