If the area of a circle is numerically equal to its circumference, then the radius of the circle is
(a) 1 unit
(b) 2 units
(c) 3 units
(d) 4 units
Solution:
The area of a circle of diameter d is
(a) 2πd2
(b) πd2
(c) 
(d) 
Solution:
More Solutions:
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