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Find the area of quadrant (in ) with radius .

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Important Questions on Perimeter and Area
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A spherical ball of diameter rolls times. How much is the distance (in ) covered by it?
(Take )

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Find the area in square centimeter of the shaded region in the given figure, where is a square of side . [Take ]

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A wire when bent in the form of a square encloses an area of . If the same wire is bent in the form of a circle, what is the area enclosed by it?

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If the length of a side of the square is equal to that of the diameter of a circle, then the ratio of the area of the square and that of the circle is:

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