If circumference and area of a circle are numerically equal, then find its diameter.
4
Given: Area of the circle = Circumference of the circle
⇒ πr2=2πr ,where r is the radius of the circle.
⇒ r2=2r
⇒ r=2
⇒ 2r=4
∴ The diameter of the given circle is 4 units long.