Question

the ratio of circumference to the area of a circle of radius r units is: (a)2:r (b)r:2 (c)1:r (d)r:1

Answer 1

✿  Circumference of a Circle with Radius 'r' is given by : 2πr

✿  Area of a Circle with Radius 'r' is given by : πr²

$\mathsf{\implies Ratio\;of\;Circumference\;to\;the\;Area\;of\;Circle = \frac{2\pi r}{\pi r^2}}$

$\mathsf{\implies Ratio\;of\;Circumference\;to\;the\;Area\;of\;Circle = \frac{2}{r}}$

Option (a) is the Answer