Question

If the number of units in the circumference of a circle is same as the number of units in the area, then the radius of the circle will be:

• A. $1$ unit
• B. $2$ unit
• C. $3$ units
• D. $4$ units

Answer 1

The correct option is B $2$ unit

We know. Circumference of circle = $2\pi r$ and
Area of circle = $\pi r^2$.

Given, the circumference of the circle $=$ area of the circle.

$⟹$ $2\pi r=\pi r^2$
$⟹$ $\therefore r=2$ units.

Hence, option $B$ is correct.