Madhya Pradesh Police Exam Model Paper 9

Given:
Circumference of the circle = Area of the circle
Formula Used:
Circumference of the circle $=2\mathit{\pi }\mathit{r}$
Area of the circle $=\mathit{\pi }{\mathit{r}}^2$
Diameter = Radius × 2
Calculation:
According to question
$2\mathit{\pi }\mathit{r}=\mathit{\pi }{\mathit{r}}^2$
⇒ 2 = r
⇒ Radius = 2 units
Diameter = Radius × 2
$\Rightarrow 2\times 2=4$ units
∴ Diameter is 4 units
The correct option is 1 i.e. 4 units