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Mathematics 8 Online
OpenStudy (anonymous):

A central angle measuring 90° intercepts an arc in a circle whose radius is 8

OpenStudy (anonymous):

@jayzdd

OpenStudy (phi):

you can do this a few ways. one way: how far to go all the way around the circle ? in other words, what is the circumference of the circle? use C= 2 pi r

OpenStudy (anonymous):

3.14

OpenStudy (phi):

C= 2* 3.14 * r what is r (for your problem) ?

OpenStudy (anonymous):

idk

OpenStudy (phi):

if you can figure out what the circumference is, then remember that 90 degrees is only part way around the circle. all the way around is 360 degrees. 90 degrees is 90/360 or 1/4 of the way around. in other words, the answer is the circumference divided by 4 C/4 you need to find C

OpenStudy (phi):

circle whose radius is 8

OpenStudy (phi):

"r" is short for radius

OpenStudy (anonymous):

ok thank for help me

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