Question

The circumference of a circle of radius $\pi$ is .

• A. $2\pi$
• B. $2{\pi }^2$
• C. $4{\pi }^2$
• D. $4\pi$

Answer 1

The correct option is B $2{\pi }^2$

The circumference of a circle of radius $\pi$ = $2\pi \times r$
$\therefore \text{Circumference}=2\pi \times \pi =2{\pi }^2$