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Question
Calculate the approximate area of following irregular figure. Let each square in square grid has side length of 1 cm. Compare this area with the area of rectangle having area of 12 sq. cms..
Calculate the approximate area of following irregular figure. Let each square in square grid has side length of 1 cm. Compare this area with the area of rectangle having area of 12 sq. cms..
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Solution
The correct option is C Area of irregular figure is greater by 3 sq.cm
As we can see the figure occupies,
9 complete squares, 6 more than half squares and 6 less-than half-squares
To get the area approximately, we can neglect the less than half squares and take more than-half squares as of full area
So area=(9×1)+(6×1)=15 sq. cms (approx.)
so it is greater than the rectangle by =15−12=3 sq. cms
As we can see the figure occupies,
9 complete squares, 6 more than half squares and 6 less-than half-squares
To get the area approximately, we can neglect the less than half squares and take more than-half squares as of full area
So area=(9×1)+(6×1)=15 sq. cms (approx.)
so it is greater than the rectangle by =15−12=3 sq. cms
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