If radius of a circle is 3cm, what is the area of the circle in sq. cm.? · ABC26GN4675

Subject: General Aptitude · Chapter: Area · Exam: Indian Railway Gr. ‘D’ Exam 2014

If radius of a circle is 3cm, what is the area of the circle in sq. cm.?

(a)$6 \pi$

(b)$9 \pi$

(c)$\frac{3 \pi}{2}$

(d)$9 \pi^{2}$

Answer

Answer (as printed): B

Explanation

Given: Radius of a circle $=3 \mathrm{cm}$ Area of circle $=\pi r^{2}$ $=\pi \times 3^{2}=9 \pi$ sq. cm.

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