Question

The ratio of circumference to the area of a circle of radius r units is​

Answer 1

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Given :-

• Radius = r

To Find:-

Ratio of circumference and area

Solution:-

Let the Circumference be C and Area be A

C/A = 2πr/πr²

C/A = 2 × π × r/ π × r × r

C/A = 2 × r/ r × r

C/A = 2/r

Hence:-

Ratio => 2:r

Answer 2

Answer:

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Given :-

• Radius = r

To Find:-

Ratio of circumference and area

Solution:-

Let the Circumference be C and Area be A

C/A = 2πr/πr²

C/A = 2 × π × r/ π × r × r

C/A = 2 × r/ r × r

C/A = 2/r

Hence:-

Ratio => 2:r