Asked by tarekegn

find the perimeter and area of asegment of acircle of radius 8cm, cut off by achord that subtends acentral angle of:
A,120 B,3/4 paiy radians
Answered by Steve
for an angle θ,
the chord is 2r sin(θ/2)
the arc length is rθ
the area of a sector is 1/2 r^2 θ

Now use that to find your answers
Answered by Nake
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