Question

If the radius of a circle be $r$ $cm$, then its area will be equal to-

• A. $2\pi r^{2}c{m}^2$
• B. $\pi r^{2}c{m}^2$
• C. $2\pi rc{m}^2$
• D. None of these

Answer 1

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

If radius is $r$ $cm$, then $area=\pi r^{2}c{m}^2$.

Option B is correct.