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Mathematics 8 Online
OpenStudy (anonymous):

if a circle has a radius of 12cm and a sector defined by a 120 degree arc,what is the area of the sector?

OpenStudy (anonymous):

@Agent47

OpenStudy (agent47):

If I recall correctly, the area of a sector is (1/2) something * the angle... hang on let me look it up

OpenStudy (anonymous):

im having more trouble with this if a circle has a radius of 12 and a sector defined by a 78 degree arc,what is the area,in cm squared of the sector? and okay thank youu!

OpenStudy (agent47):

(120/360)*pi*12^2=144pi/3 that's for the first one

OpenStudy (anonymous):

thank youu!

OpenStudy (agent47):

(78/360)*pi*12^2=11232pi/360=31.2pi

OpenStudy (anonymous):

thank you so much!

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