Find the area of a sector whose arc length is 30 π cm and the angle of the sector is 40°.
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Answer:
Step-by-step explanation:
40/360=30π
1/9=30π
1=30π*9
360=270π
(360/360=1)
Circumference =270πcm
2πr=270π
r=135cm
Area of sector = 40/360*πr^2
=1/9*22/7*135*135
=6364.28cm^2
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