Radius of a circle is 21 cm. If length of arc of that sector is 55 cm, find the area of the sector.
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AREA OF SECTOR=LR
AREA=21×55=1155
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Answer:
Step-by-step explanation:
(R)= 21 cm
Length of the arc = 55cm
Area of the sector = length of arc × r
——————-——
2
= 55×21
———
2
=577.5 cm
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