If the radius 21 cm and the angle at center of circle is 140 degree then the length of the arc is
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Answer:
Given: Radius , r =21 cm
Angle at the centre of circle , n° =140°
Length of an arc = ?
W.K.T Formula, Length of an arc = 2πr( n°÷360°) units
= 2*(22/7)*21*(140°/360°)
= 154/3
= 51.33cm
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Step-by-step explanation:
lenth of the arc= 2πr( theta/360)
lenth of the arc=2*(22/7)*21(140/360)=51.34cm
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