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  1. If the area of a circle is A, radius of the circle is r and circumference of it is C, then
    1. A
      		= C
      r
    2. rC = 2A
    3. C
      		=
      r
      A2
    4. AC =
      r²
      4
Correct Option: B

Using Rule 14,
A = πr²
C = 2πr

∴
A
 =
πr²
 =
r
C2πr2

⇒ rC = 2 A


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