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प्रश्न
Find the approximate area of an irregular lamina of which boundary line is drawn on the graph paper shown in following figure.
उत्तर
From figure, the number of complete squares = 11
The number of squares more than half = 9
∴ Total number of squares = 11 + 9 = 20
∴ Area of the 1 square = 1 cm × 1cm = 1 cm2
∴ Area of 20 squares = 20 × 1 cm2 = 20 cm2
∴ Approximate area of irregular lamina = 20 cm2
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