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3 December, 17:16

What is the area of a sector

when r = 3 and 0 = 2.75 radians?

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Answers (1)
  1. 3 December, 18:15
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    Area of circle: A=pi*r². This area coresponds to 360degrees, or 2*pi radians.

    2*pi ... pi*r²

    t radians ... x

    where t=2.75rads

    Area of t: x=pi*r²*t/2/pi=r²*t/2

    Area of t: 3²*2.75/2=9*2.75/2=12.375

    Answer: the area of 2.75 radians is 12.375
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