An angle from a sector area

An angle from a sector area

Secondary 3
4 marks
TGM Original Questions

A sector of radius \(9\text{ cm}\) has area \(54\text{ cm}^2\).

  1. Find the angle of the sector in radians. Give your answer as a fraction.[2]
  2. Calculate the perimeter of the sector.[2]

Solution:

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Answer:(a) \(\dfrac43\) radians. (b) \(30\text{ cm}\).

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