The area of a circle is a square feet, its radius is r feet, and a/r =

Question

The area of  a  circle is a square feet, its radius is  r  feet, and  a/r = 5 . What is the circumference of the circle, in feet?

A. 4 
B. 5
C. 10
D. 15
E. 20

rajatchopra1994 · Answer

Explanation:

a/r = 5
π*r^2 /r = 5
r = 5/π

Circumference: 2πr = 2π* 5/π
= 10

IMO-C

Neha2404 · Answer

IMo-C

Given
Area of Circle=a
Radious =r
And a/r=5
 So
a=5r

Area =pi r^2
5r=Pi r^2
5=pi r

Circumstances of Circle= 2pi r
 =2*5
 =10

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Babineaux · Answer

a = 3.14 x r ^2 ;

And a / r = 5;
=> (3.14 x r ^2 ) / r = 5;
=> 3.14 x r = 5;

Now circumference 2 x 3.14 x r = 2 x 5 = 10.

IMO ans is C

satya2029 · Answer

a=pi*r^2
a/r=5
Pi*r=5
2*pi*r=10
C:)

Kinshook · Answer

Given: The area of  a  circle is a square feet, its radius is  r  feet, and  a/r = 5 . 
Asked: What is the circumference of the circle, in feet?

a = \pi r^2  
 \frac{a}{r} = \pi r = 5 
Circumference =  2\pi r = 10

IMO C

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