When the circumference and area of a circle are numerically equal, then the diameter is numerically equal to	Choose the correct choice from the following answers.
A) area  B) circumference  C) 4  D) 2π  E) None of these
According to question, circumference of circle = Area of circle   or πd = π(d⁄2)2 [where d = diameter]   ∴ d = 4   Answer 4
<result>C</result>
When the circumference and area of a circle are numerically equal, then the diameter is numerically equal to