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InterviewSolution
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By counting squares, estimate the area of the figure 10.9 b. |
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Answer» If we see the given figure, we find, Number of fully-filled square ` = 11` Number of half-filled square ` = 3` Number of more than half-filled square ` = 7` Number of less than half-filled square ` = 1` If we consider the area of each square is `1` square unit and more than half-filled has `1` sq unit area, Area of fully-filled square `= 11**1 =11` square unit Area of more than half-filled square ` = 7**1 = 7` square unit Now, if the area of each half-filled square is `1/2` square unit and less than half-filled has `0` sq unit area, Area of half-filled square `= 3**1/2 = 3/2` square unit Area of less than half-filled square ` = 5**0 = 0` square unit So, total area ` =11+7+3/2+0 = 19.5` square units |
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