The figure consists of a square and 3 quadrants. The length of the square is 10 cm. Find the perimeter of the figure. Take π as 3.14.
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Answer:
Correct option is
A
Perimeter = 20.56 cm
B
Area = 9.72 cm
2
Area of square =Side
2
=4
2
=16cm
2
Area of cut portion = Area of two circles = 1 circle + 4quadrants
=2× pi×1
2
=6.28cm
2
So, area of remaining portion of square =(16−6.28)=9.72cm
2
Perimeter of the shaded region =4 quadrant + 1 circle+portion of the square
=4×
4
2πr
+2πr+4(2)
=4×
4
2π(1)
+2π(1)+8
=4π+8
=20.56cm
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