Multiple choice

A sector of 60 degrees of a circle has an area of 154/6 sq. cm. Find the radius of the circle.

  1. 4 cm

  2. 6 cm

  3. 5 cm

  4. 7 cm

  5. 14 cm
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The sector has taken out from a circle. Therefore, radii of both will be same. So, area of sector = (pie*r2*angle)/360 degree = 154/6 = (22*r2*60)/7*360 = 154/6 r = 7 cm Therefore, radius of circle = 7 cm.  

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