The area of a circle is πr2. To find the area of a sector with a central angle of Θ, measured in radians, by what should you multiply πr2?

ANSWERS

2017-08-18 20:21:10

there are 2pi radians in a circle so the fraciton is Θ/(2pi) so pir^2 times Θ/(2pi)=pir^2Θ/2pi=Θr^2/2 multiply it by Θ/(2pi)

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