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Question

The side of a square is 2 cm and semicircles are constructed on each side of square then the area of the whole figure is

A
(4+2π)cm2
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B
(4+4π)cm2
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C
4πcm2
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D
8πcm2
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Solution

The correct option is A (4+2π)cm2
Given the side of square is 2 cm
Then the area of square =2×2=4
And Semi circle are constructed on each side
Then four sides of square constructed four semi circles of radius half of side of square=1 cm
Then area of one semicircle=12π(1)2=π2sq cm
So area of four semicircle=4×π2=2πsqcm
So total area of figure =4+2π sq cm


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