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Question

If the area of a circle and circumference are numerically equal then radius of circle is ________. 


A
π
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B
π2
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C
1
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D
2
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Solution

The correct option is C $$2$$
Given: 
Area = Circumference
$$\Rightarrow \pi r^{2} = 2 \pi r$$ 
$$\Rightarrow \dfrac{r^2}{r} = 2 $$ 
$$\Rightarrow r = 2 $$ 
Hence radius is $$2$$ units 
Option (D) is correct

Physics

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