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Mathematics 4 Online
OpenStudy (anonymous):

HELP ASAP!!!! WILL MEDAL AND FAN!!! Prove that the two circles shown below are similar.

OpenStudy (anonymous):

What circles?

OpenStudy (anonymous):

OpenStudy (anonymous):

@Samus_Aran

OpenStudy (anonymous):

@aaronq

OpenStudy (anonymous):

@StudyGurl14

OpenStudy (anonymous):

@SithsAndGiggles

OpenStudy (anonymous):

@Secret-Ninja

OpenStudy (anonymous):

@undeadknight26

OpenStudy (anonymous):

@amistre64

OpenStudy (anonymous):

@confluxepic

OpenStudy (anonymous):

lol, everyones so busy

OpenStudy (anonymous):

@campbell_st

OpenStudy (campbell_st):

here is a simple thing.... find the length of the radius for each circle and then determine the scaling factor. the show that the circumferences are in the same ratio...

OpenStudy (anonymous):

yeah but how do i do that???

OpenStudy (anonymous):

i have to use the equation of a circle and find the center and radius square right? I just forget how to do that.

OpenStudy (campbell_st):

well the equation of the circle is \[(x -h)^2 + (y - k)^2 = r^2\] (h,k) is the centre and r is the radius

OpenStudy (anonymous):

ooh, i see, cuz they already gave me the center. kk thanks guys

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