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Q.

Find the area of a quadrant of a circle whose circumference is 22 cm: 


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a

Question Image

b

Question Image

c

Question Image

d

Question Image

answer is A.

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Detailed Solution

Concept:  First, find the radius of the circle using the perimeter formula Question Image. Later, since the quadrant of a circle is the Question Imageof the circle, divide the area of ​​the circle formula by 4 to find the area of ​​the quadrant.
 Given, the perimeter of the circle = 22 cm
As you know, the circumference of a circle with radius "r" is Question Image.
Question ImageThe quadrant of a circle is the Question Imageof the circle
Area of quadrant of circle = Question ImageQuestion ImageHence, the correct answer is option (1).
 
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