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Posted by on Friday, July 29, 2011 at 10:18pm.

An arc subtends an angle 15 degrees at the centre of the circle. If the radius is 4 centimetres, find the area of the sector?

  • trig - , Friday, July 29, 2011 at 11:08pm

    area of whole circle = 16π cm^2
    15° = 1/24 of a rotation, so the are of the sector is
    (1/24)(16π) = 2π/3 cm^2

  • trig - , Saturday, July 30, 2011 at 2:54am

    Thanks Reiny. it was simpl right?

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