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प्रश्न
In the given figure, find the area of the unshaded portion within the rectangle. (Take π = 22/7).
बेरीज
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उत्तर
In the given figure
Radius of circle = 3 cm
Length of rectangle = 15 cm
Breadth of rectangle = 6 cm
The area of the unshaded portion within the rectangle
= Area of rectangle - [ Area of I + II + `1/2`III ] circles
= 15 x 6 - [ Area of `2 1/2` circles ]
= 90 - `5/2` x πr2
= 90 - `5/2` x 3.14 x 32
= 90 - 70.65
= 19.35 cm2.
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