Find the length of an arc of a sector of a circle whose radius is 21
cm and the angle subtended at the centre is 300
.
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Answer:
area of sector = (theeta/360)(pie.r^2)
= (300/360)(22/7(21)(21))
= 300/360 (22×21×3)
= 300/120 (22×21)
= 138600/120
= 1155
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