If the circumference & the area of a circle are numerically equal,then

1.	If the circumference & the area of a circle are numerically equal,then diameter of the circle is
Answer» Area of circle =\xa0{tex}\\pi r^2{/tex}Perimeter of circle =\xa0{tex}2 \\pi r{/tex}Given , Area of Circle = Perimeter of Circle{tex}\\Rightarrow \\pi r^2= 2\\pi r{/tex}{tex}\\Rightarrow \\frac{r^2}{r}=2{/tex}{tex}\\Rightarrow r=2{/tex}\xa0cmTherefore, diameter of the given circle = 2(r) = 2(2) = 4\xa0cm

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