Question

the perimeter of quatrant of a circle whose radius is 7/2 cm is?
​

Answer 1

Answer

12.5

Step-by-step explanation:

Radius of quadrant  =  

2

7

cm

Perimeter of quadrant = length of arc +(2× radius)

=(  

4

1

​  

×2πr)+2×  

2

7

​  

 

=(  

4

1

​  

×2×  

7

22

​  

×  

2

7

​  

)+7

=  

7

11

​  

+7

=5.5+7

=12.5 cm

Answer 2

Answer:

perimeter of circle =2πr

2X22/7X7=44cm²

Now

perimeter of quadrant of a circle =perimeter/4

44/4=11