Question
A sector of a circle has radius 9 cm and a sector angle of 120°.
[5 marks]
(a)Calculate the length of the arc of the sector.
(b)Calculate the area of the sector.
(c)Calculate the perimeter of the sector.
Give each answer correct to 3 significant figures.
This question has 3 parts. You don't have to get them all — each part you answer earns its own marks. Write them as (a) … ; (b) … , or just send the one part you worked out.
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