If radius of a circle is 3 cm, what is the area of the circle in sq. cm ?
A. $$6\pi $$ sq. cm
B. $$9\pi $$ sq. cm
C. $$\frac{{3\pi }}{2}$$ sq. cm
D. $$9{\pi ^2}$$ sq. cm
Answer: Option B
Solution (By Examveda Team)
Given: Radius of a circle = 3 cmArea of circle :
$$\eqalign{ & = \pi {r^2} \cr & = \pi \times {3^2} \cr & = 9\pi {\text{ sq}}{\text{.}}\,{\text{cm}} \cr} $$
This Question Belongs to Arithmetic Ability >> Area
Join The Discussion