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OpenStudy (anonymous):
I'm not in whatever course you're in but I know how to find the areas of circles and sectors so I can help you if you'd ask a question.
OpenStudy (anonymous):
find the measure of DEA. the figure is not drawn to scale
a. 130
b. 230
c. 140
d. 120
OpenStudy (anonymous):
OpenStudy (anonymous):
I'm assuming there's a little curvy line over DEA?
OpenStudy (anonymous):
yes
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OpenStudy (anonymous):
Ok. That's the measure of an arc. The measure of an arc is the same as the measure of the interior angle from the center of the circle.
In other words, the measure of arc DEA is the same as the measure of angle DOA.
OpenStudy (anonymous):
i see now
OpenStudy (anonymous):
Good. :D
OpenStudy (anonymous):
hehe :) but i dont understand the question
OpenStudy (anonymous):
wait is it A ?
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OpenStudy (anonymous):
Yes. You just add them up.
OpenStudy (anonymous):
so 130 ?
OpenStudy (anonymous):
Yes.
OpenStudy (anonymous):
nice :) can i ask another ?
OpenStudy (anonymous):
Go ahead.
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OpenStudy (anonymous):
name the minor arc and find its measure
a. ADB;30
b.AB;115
C.ADB;245
D. AB;245
OpenStudy (anonymous):
I think its B ,am i right
OpenStudy (anonymous):
Yes, the minor arc is the smaller of the two possible arcs.