Question

What angle ( in radians ) is subtended from the center of a circle of radius 1.40 m by an arc of length 1.60 m?

Answer 1

Let x be the unknown
Perimeter of a sector=
2(22/7)*1.4*(X/360)____(1)
=2*radii+arc length
=2*1.40+1.60
=4.4m
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(1)becomes
2(22/7)*1.4*(X/360)=4.4
X=180°
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Therefore the angle,X=180°