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Mathematics 23 Online
OpenStudy (anonymous):

okay so imma ask the question then post the picture as a comment: Calculate the area of the smaller sector

OpenStudy (anonymous):

OpenStudy (eyust707):

whats the area of the whole circle?

OpenStudy (muhammad_nauman_umair):

ok

OpenStudy (anonymous):

it doesn't say

OpenStudy (eyust707):

thats true... but it gives us radius

OpenStudy (eyust707):

and with the radius we can find the area of the whole circle

OpenStudy (anonymous):

correct

OpenStudy (eyust707):

do you know what the forumla is for area of a circle?

OpenStudy (anonymous):

2X3.14Xradius

OpenStudy (eyust707):

nope thats circumference

OpenStudy (eyust707):

we want area

OpenStudy (eyust707):

\[Area = \pi r^2 \]

OpenStudy (eyust707):

what is r?

OpenStudy (anonymous):

radius which is 5

OpenStudy (eyust707):

yep so whats area?

OpenStudy (anonymous):

31.4

OpenStudy (anonymous):

oops no its not lol

OpenStudy (anonymous):

78.5

OpenStudy (eyust707):

nice!

OpenStudy (eyust707):

so thats the area of the whole circle but we want only (84/360) of that

OpenStudy (eyust707):

so 78.5 x (84/360) = ??

OpenStudy (anonymous):

18

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