Mathematics 34 Online
OpenStudy (anonymous):

Find the area of a sector with a central angle of 160° and a diameter of 7.5 cm. Round to the nearest tenth. Thanks!

OpenStudy (anonymous):

sector is a part of the circumference

OpenStudy (anonymous):

So first find the circumference

OpenStudy (anonymous):

after finding the circumference, multiply it by the ratio of angle 160/360

OpenStudy (anonymous):

I think I got 4/9 is that correct for the ratio?

OpenStudy (anonymous):

Yes

formula of sector area is theta / 360 x pi (Radius)^2 therefore 160/360 x pi ( 7.5/2) ^2 19.6 cm ^2

OpenStudy (anonymous):

Thanks guys!

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