Question

ratio of circumference and area of a circle is 2:7. Find its circumference.​

Answer 1

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Answer 2

Answer:

Step-by-step explanation:

Area of the Circle (A) = πr²

Circumference of the Circle (C) = 2πr

Ratio of the C to A = 2:7

∴ 2πr/πr² = 2/7

⇒ 2/r = 2/7

∴ r = 7  

∴ Circumference of the Circle  = 2πr

= 2π (7)

= 14π

(π value=22/7 or 3.14)

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