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OpenStudy (anonymous):
Angle DCA is 120°. What percent of the circle's area does this section represent?
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OpenStudy (zale101):
this is simple, draw a circle, label 120 degrees "DCA" and count how many sections are there.
OpenStudy (anonymous):
3
OpenStudy (zale101):
u can try to use this formula 1/6 x pi*r^2
OpenStudy (anonymous):
i don't understand. i mean how and what u substitute
OpenStudy (wolf1728):
How a bout a diagram? I'm assuming Angle DCA is a central angle correct?
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