Exams › SSC CGL (Prelims) › General

A sector of a circle subtends an angle of pi/4 radians at the centre, and the circle's radius is 8 cm. Find the area of this sector.

1. 16 pi cm^2
2. 12 pi cm^2
3. 32 pi cm^2
4. 8 pi cm^2

Correct answer: 8 pi cm^2

Solution

Sector area = (1/2) r^2 theta = (1/2)(64)(pi/4) = 32 x pi/4 = 8 pi cm^2.

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