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m4nt1c0r3:
The beam from a lighthouse is visible for a distance of 15 mi. To the nearest square mile, what is the area covered by the beam as it sweeps in an arc of 270°?
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Jaydaking:
18
m4nt1c0r3:
How is it 18?
Jaydaking:
i meant to say 56π\9
crispyrat:
|dw:1622572115976:dw| ok so to find the area of an arc you would do arc ngle/360*pi*r^2 which is 270/360*3.14*15^2
m4nt1c0r3:
So would that be 530. 14, rounded to 530 mile^2? Correct?
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TyDaGreatest:
Yep that would be tight
TyDaGreatest:
*right
m4nt1c0r3:
Thanks :)
TyDaGreatest:
np
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