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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!
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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
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OpenStudy (asadkarim7):
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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